I think that the rat is pretty funny but I wish I could see it better! Don't blend so much. You should try again with more solid colors, because rats are funny fellows. A picture you should look at is Thear's Chase drawing. It's pretty simple, but still well composed. I think this would look good like that.
drawn in 1 hour 8 min
http://cellosoft.com/2draw/view/26033/