Artwork inspired by a Japanese game "Tabikaeru (旅かえる)" - a travelling frog game, the creator HITPOINT who also did "Neko Atsume (ねこあつめ)" - a cat collector game.

Credits of original work to HITPOINT :)

Original sketch was did by hand drawing and outline with artline pen.

After tracing with lines, filled out colors that was used in the game.

Added outlines and it's done!