i dont think i ever did give that critique did i'?
welll. i'll do it again even if i have, i'll do it again
as i've said to many people. there's always artistic talent there, you just need to perfect it.
so. main things. work on anatomy.and key features. use this site
http://www.posemaniacs.com/ . although i must say your anatomy is pretty amazing ;'D helps with poses and human based anatomy. also use photos of animals to help with key features such as muzzles and ears.
thats about it really. try more, lined and coloured pieces. or adding background for the more professional look. but your drawings are amazing anyway. keep up the work