Shading and designs are impeccable. Many of them are convincing... especially Brushem, Tentacruze, Phyale, and that unnamed cuttlefish thing. Those are excellent. I love looking at them.
Your Scizor evo looks too much like the Kricketune line, though, and the Lumineon and Seaking evos are kinda too elaborate and intricate to be actual Pokémon; they look like real fish. Gigimplode looks like too confused of a design, like a bunch of disparate ideas glued together.
Overall, you seem to have a good sense of what Pokémon designs entail, because believe me, they are far superior to many "fakemon" I've seen out there. In fact, as pieces of art by themselves, they are far beyond spectacular.