I really love the colors that you chose for this piece. A normal underwater scene is usually done in cool colors but you some how managed to do it in warm colors and not make it look abstract! It makes the piece very unique as well which I like!

I love that there is a brilliant light source from the top giving it a heavenly quality. The style is very nice as well, it looks like it could come out of a children story book.

The flow of the fishes fins are beautiful, along with the flow of the sea jellies tentacles. I really don't see anything you need to improve on, I like the piece as is!

Great Job!