Here's my entry! I might do another if I have time, but a little chubby, celestial themed Axolotl came to mind when I read the list and I just had to go for it! Also, this is like, the sweetest premise for an art contest I've ever heard??? The lines under the tail fin are transparent, also, so it gives the fin a translucent look ^^
Image should link to a nice transparent png but if it doesn't lmk and I'll pop it on tumblr and dm you a link!