Light source is where?
Seriously, look at the Lapras ... evo... thing. You have it where the light source has got to be in a minimum of three places, leading to conflicting, confusing, and bad shading; the tail also suffers from bad-tail-itus, aka goes to thin to soon and thickens out before it ends.
The Lapras.. prevo.. is poorly shaded as well, clearly you have your shading generations confused/conflicted/thrown together as while the first could partly pass as somewhat DP style, this and most of the rest can't. First off; you have it coming down from the top, the light source, yet the unessisary highlighting for the back is off to the side; there's a confusing shadow near a flipper, and a random string of lighter yellow on the neck. The square-ish coloring on the back also doesn't help the situation and because there's three shades; yet body only has one shade, it's again a conflicting situation.
Your girafarig prevo has a background leg thicker than the front, and has either two pairs of front legs or two pairs of back legs, and you really need to fix that. And the shading, light source seems to be coming in from the top, and below, for it.
Overall they all need work; basically drawing them from scratch, using DP sprites for shading references, using real objects for shading references, using the tutorial for scratching/shading references, because you really need to work on proportions, shading, limbs/feet, outlines, and placing a more strict lightsource for your sprites.