Real nice man, I dig the squid one and Galleom. Although for blending with his hands on the ground, maybe try using the "grass" brush that comes default with photoshop, with maybe a thin width and scatter.
The Everyday Swamp Animals one has some obvious blending problems - you're bound to run into them especially when you use a gritty & detailed photo like that and those very cartoony Pokemon concept arts - but you did a great job trying to make it work. Poliwag looks good there, and I like how you added "shadows" onto that lizard one behind the tree. It's mostly the guy on the left that looks real bleh. :S
overall, cool bro