Gwen Trix, that's all really nice. Smooth lines and nice colours. On the chibi human, I'd suggest drawing fingers. I know chibis often have no fingers, but on such a large and slightly more detailed one, no fingers seem odd.
Lululizzy23, I have no idea on horse anatomy but the legs on the second drawing look very strange. I suggest looking at more photos of horses and keep on drawing to get them right. :D
Royal Mirage, that is beautiful. The way the faces are displayed against the starry sky and water is really nice. The reflection's well done too.
808, on the tiger, the body is much too thin, Tigers are fairly bulky, see? Also, it looks like it has 2 shoulder blades on top of eachother, which is strange, you might want to fix that. ;)
Nice try on the anthro, though.