Hello,
For example I have illustrated a children`s book "Mammoth and Little Bear" and I have experience in children`s book design. Sample picture on my portfolio page.
Usually I draw some parts of illustration on the paper and after I digitalize that picture and add final shine. But I can to my illustration only in Adobe Illustrator or Inkscape or just on paper.
I`m ready for 1 sample picture for your book so you can see if my style and ideas fit to your vision.
Best regards,
Megalithic