First POst!
EDIT: Or it was, until three others posted by the time I got my post typed...
Alright, oen by one:
Scizor is not too bad, but you need to recolor the outlines. See the red? Get rid of it with a darker blue. Same with, well, most of these.
The Lapras needs more than just its spots a lighter shade of pink. It looks liek you just made every blue a magenta color except the spots, which you colored a pink that's too light. It contrasts too much, and the only shading on Lapras is on the stomach.
Porygon-Z is pretty good, considering. I just can't tell, but I hop that the black isn't just one shade. Then it woudl ;look too flat. even black needs shading.
Pichu/Gastly is probably one of the most lazily-made and careless fusions I've ever seen. You took Pichu's head and put it in Gastly smoke. You didn't even fix the outline on Pichu's neck so it actually looks like a floating head--you didn't even bother recoloring the head! I woudl suggest scratching a head, but if you can't scratch too well--which I understand, neither can I--then recolor it, perhaps SCRATCH small parts, like fangs or Gastly eyes, and there.
The Treecko is interesting, btu if you weren't going for a flat look then you failed. The red and blue contrast too much, and if you were going for a devamp, then one of those needs to be changed to a darker or lighter shade of the other one. If you weren't going for a devamp, then same thing, and change the white to an even lighter shade of the same color.
Onix/Gyarados needs work. Badly. All you did was remove the horn, color it blue and paste Onix's head on a Gyarados. You need to practice fusions more. First off, use more parts of Onix, maybe replace some of Gyarados' body sections with rocks. Maybe even scratch some! And keep the horn.
Regice is good. looks like rubies. I liek it.
Leafeon isn't bad, either. You need a much darker outline on the tail leaf, though. Lighter doesn't work.
Togepi is pretty good, I think there's a little shading problem with its head.
Bulbasaur...doesn't work. Black needs shading, you can't just have it one straight color. And the bulb--the lower you go it should get darker, not lighter.
Deoxys...NO.The only shading is on the head and hand. Shade the rest of it.
Basically, your fusions are rushed and unprofessional, and some of your recolors need shading. Also, don't use MS Paint default colors.