Recherché work you have here, your style is considerably unique I must say. The Pigeot and Nintales are especially well-done; your way of shading is what makes them stand out the most. As for your Typholosion, aside from agreeing with the others on its color, it appears to me that you overexaggerated on the flames projecting from its neck. They're flowing wildly into various directions within the page and make it seem as though Typholosion is wearing some sort of fancy cape. A little too quixotic, in my oppinion.
Now for the negative aspects of your work. You, apparently, suffer from the same problem as most artists- anatomy and proportion. For example, your Dragonite's body is awfully small for its capacious, or large, head. I don't think that it'd be able to get off the ground with a noggin that big and wings that small. Its tail is also too short, though it isn't ordinarily that long, your tail is still falls under the limit of general proportions. It isn't just the Dragonite, your Mew and Typholosion also suffer from the same weak points. I suggest practicing more on the physique of the Pokemon, getting down their basic body structures, and looking to some pictures for reference.
Overall Good job, just keep practcing.
Psycho