Shading is off on the capsules. The bottom part needs way more contrast, and the light source shouldn't change in the animation.
Gooey Bomb should be scrapped, it's beyond disrepair.
PokéBall and Pit Fall look like octagons and not circles.
Mr. Saturn is too tall and too skinny.
Also your choice of colors is fairly bad, trying using black more often.
The Elebit is way to blocky and too tall, and the antenna should be rounded out not stiff.
(^ pretty much applies for the manatee too^)