Mariana Ostanik

Mariana Ostanik – Designer

Illustrator and editorial designer who creates with cuteness and fun for babies and toddlers, with vast experience in children's market.

Overview

Originally from Brazil, I now reside in Portugal, and since 2018, I have dedicated myself to creating books that inspire young minds by combining my love for both literature and art.

I hold a degree in Graphic Design from the University of Estate of São Paulo and a Master’s in Science from the University of São Paulo. My professional experience includes collaborating with publishers and authors worldwide to create engaging illustrations and designs.

I have worked extensively on children’s picture books, board books, and activity books, with a particular focus on crafting stories that resonate with toddlers and early readers. My creative style is often described as warm, cute, and cozy—perfect for capturing the imagination of young audiences.

Growing up surrounded by art materials and imaginary stories, I found inspiration in creating characters that seemed to leap off the page. Today, that same energy and imagination fuel my work as I aim to inspire the next generation of readers. My goal as an illustrator is to nurture a love of literature in children while bringing warmth, creativity, and fun to each project I take on.


* Process *

The content creation process is divided into 03 parts:

(a) Sketch: this is when the project is still in its start when the briefing is defined when the process of studying, creating sketches, and presenting the first ideas begins; a “sketch” is an unfinished drawing (without applying color, shadow, light, effects, etc.);

(b) Coloring: occurs after the sketches presented have been approved; now begins the process of finalizing the art, when applying colors, shadow, light, effects, and everything necessary for the illustration to be finished;

(c) Editorial Design: with all the illustrations done, the book design starts. In this phase, the text is combined with the illustrations, and the book parts like the cover, and the text blocks are created. This phase is responsible for making the book attractive, visually interesting, and easy to read.


After all the content is completed, the files are delivered in high resolution, and for the platforms, you need (E.G.: kindle)


Important: This fee includes 2 rounds of corrections per illustration. The extra correction will have a 20 USD fee per illustration.


I usually share every part of the process with you here, so you can follow me and approve everything on time, feel free to give me your opinion and be a part of the entire project - we want to make something amazing!


* Important Topics *

- My pricing varies depending on the style and subject matter. Feel free to get in touch for more details.

- I don’t create animations, but I can recommend trusted professionals to help with your book trailer if needed.

- My schedule opens when I have available spots. I only work on a maximum of two books at a time to ensure each client gets the attention they deserve. If you'd like to work with me, stay tuned!


I hope we can create amazing things together!

Services
Non-Fiction
Children’s Non-Fiction
Fiction
Picture Books
Languages
English
Certifications
  • Character Design Complete Course on ICS Art School Brazil
  • Picture Book illustration course on ICS Art School Brazil
  • Illustrating Children's Stories - Complete course on Domestika
  • Childrens illustrations for Editorial - Complete course on Domestika
  • Colorful animal illustration with Photoshop - complete course on Domestika
  • Creative Techniques for character design - complete course on Domestika
  • Atmospheric Scenes in Procreate: Paint with Color and Light - Complete Course on Domestika
  • Bachelor in Graphic Design - University of Estate of São Paulo (Brazil)
  • Masters in Applied Sciences - University of São Paulo (Brazil)

Work experience

Self-employed

Jan, 2021 — Present

I work with illustrations (books, activity books, board books, puzzles, board games, and more) and editorial design for children's markets. Most of my clients are independent authors around the world and publishers, like Porto Editora (from Portugal) and FyeN (from The Gambia).

Portfolio

Made with Reedsy
Slinky Dinky Doo: and the Razzle Dazzle Sprinkles

Kalmes, Megan

Snuggle Bug Press

Cover Design Illustration Book Interior Design
Made with Reedsy
Ivy's Dinosaur Tea Party

Buck, Carrie A

Carrie A. Buck

Cover Design Illustration Book Interior Design
Cover Design Illustration Book Interior Design
Made with Reedsy
My Mom's Got No Qualms

Blake Carey

Shenzhen Swift Printing Co., LTD

Cover Design Illustration Book Interior Design
Made with Reedsy
The Skunk Stunk

Palmer, Jean

Cover Design Illustration Book Interior Design
Cover Design Illustration Book Interior Design
Cover Design Illustration Book Interior Design
Scribble Pigs

Mireles, Amanda

Cover Design Illustration Book Interior Design
Cover Design Illustration
Stella in the Kitchen

Nunes, Andrea F

Cover Design Illustration
Cover Design Illustration Book Interior Design
Cover Design Illustration

Mariana has 5 reviews

Professionalism

Quality

Value

Responsiveness

Megan K.

Megan K.

Dec, 2024

Pinned
I don’t even know where to begin! I can’t imagine working with anyone but Mariana on my children’s books. She was fantastic to collaborate with from start to finish. When I saw her mockup, tears filled my eyes, and I knew she was THE ONE! She truly exceeded my expectations and everyone else's work. Mariana was incredibly patient, kind, sweet, fun, and very open to the many changes and ideas fr...
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Mariana O.
Meg, I have no words to thank you. I’m also incredibly happy with our collaboration and truly hope to always give my best to your books. Through this project, we’ve built more than just a professi...
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Carrie B.

Carrie B.

Aug, 2024

Pinned
Mariana was an absolute joy to work with! She was always available to answer questions and responded quickly. Her artwork is amazing and absolutely captures the characters perfectly. I didn’t have many suggestions, but the ones I did have she was completely open to making adjustments. I couldn’t have chosen a better artist to make this book come alive. I look forward to working with her again o...
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Mariana O.
Thank you so much Carrie! You're amazing too and I'm super happy and excited for our next book!
Blake C.

Blake C.

Mar, 2024

Pinned
I am blown away by Mariana! She was incredible. She was responsive, helpful, and so talented! I actually waited to do this project until she was available because I like her style so much and she did not disappoint. She guided me through this whole process, was patient while I figured my own ideas out, and delivered on something I can’t even believe is real now. She captured my vision perfectly...
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Mariana O.
Oh, Blake! Thank you so much! You were amazing throughout the project, and I feel incredibly fortunate to have been chosen by you for the book. I wish you a lot of success and all the best with the...
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L B.

L B.

Jan, 2024

I love working with Mariana. Her work is professional and she is always open to suggestions. She has a very positive attitude and has high expectation of her own work. She did extensive research based on the topic of my project on her own and it reflects her work behind the scenes in her illustrations. I really appreciate her attention to details and her support to my publishing journey. Highly...
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Mariana O.
Oh, Eva, thank you so much! It was a pleasure to work with you and bring this amazing book to life. Eva was always available to assist me, providing detailed materials to help me understand and rep...
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Jeff H.

Jeff H.

Oct, 2023

Mariana was great! Super upbeat and fun to collaborate with. She had many great suggestions but was always more than happy when I wanted to go in a different direction. She was very fast and in fact, was able to beat our deadline by a couple of weeks. I would definitely work with her again and if she wasn't available I would wait until she was! Her art was even better than I hoped it would be. ...
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Mariana O.
Oh, Jeff! Thank you so much! It was a pleasure to work with you on this amazing project and I wish you all the success! And hope we can work together again! Thank you!

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