Ooo, very interteresting. The perspective is very well done, and I love the cat and mouse character's ears - it makes them look so daunted even though you can't see their faces. Moveable ears are so useful for that. The anotmy's good but still looks cartoony (which it should - it's a cartoony pic, after all! ^_^), and I love the border art. And for whatever reson... I love the mountain goats, too.
Keep drawing! ^_^
aw wow... I mean WOW, that's amazing. You TRIED to work with more perspective? I think U DID - that's really gud, the color - the cat and horses - it's soooo gud. Man, I'd be dead proud if I were u. I love it.