I can see that you like making Pokémon banners. Well, since I'm not a graphix designer, I cannot give you advice in this fields even if you pay me.
However, at least let me tell you which one I like:
1: I've seen that render used soo many times that it doesn't charm me anymore.
2: Now, this one, I like.
The Mario and Bowser. It looks really cool, in my opinion.
The Ed one, maybe you can smooth the render with the background a little bit more? It looks like it's standing out.
Metroid and Megaman is for the win.