Pretty good for re-colors and edits, as far as that goes.
To make the Azumarill a bit different, I suggest maybe a different bubble pattern.
The Kingdra's horns should stay in my opinion, but the fin should change shape.
Luxray is pretty good, but the extra lock in the hair seems miss-placed and hard to see. Maybe move it to the right a bit.
Ninetail's and Sudowoodo, I'm not much of a fan of though. The extra little orange and lighter pallete doesn't really seem like a major difference, maybe add an different eye color, and take away a lock of hair. Sudowoodo, just isn't Sudowoodo without the bark spots, maybe make a different pattern like in Azumarill, but on the other hand, love the pallete.
Gible is great, I'm just not a great fan of it (the Pokémon, not the sprite).