I created an illustration of a chikuwa (fish cake).
For the coloring, I repeatedly pressed a stamp to create a gradient effect.

“22-moji de, Futsu no ‘Chikuwa’ o Trend ni Shite Kudasai” (Please Trend an Ordinary “Chikuwa” in 22 Characters)
Author: Hideaki Takemasa
Publisher: Sunmark Publishing
Book Design: Shinpachi Inoue
Cover Illustration: Natsuko Oshima