KAWAII! (sorry, I just had to say that) Your art is just awesome. Could you draw a blaziken, corsola, or a swampert?
Personally, out of the ones so far, I think the spheal, charizard, celebi, suicune, quilava, croconaw, scizor, umbreon, Ho-oh, and dragonite are the best.
The armaldo seems kind of 2D and the tail is a bit too much too the left. Really nice "metallic" look though. On latios, the 2nd half of the body looks a little short. Even with the abdomen smaller for depth, it still seems out of proportion. For milotic, the head seems a bit smaller in accordance to the rest of the body.
Nevertheless, great pictures! Yours are probably the best unofficial pokemon drawings I've seen. Keep it up! ^.^