Thanks for your feedback :)

This is a cool idea. You could probably do a lot of things like this with kirby.

Some of the curves, like on the top left, are rough and should be smoothed out a bit. I think it's better to just have him at normal size, since enlarging the image for the full sized view probably isn't necessary in this case.

Since the background isn't needed for anything here, it's best to make it transparent. Here's a brief guide for making things transparent if you aren't sure how- link