Well, I'm looking at your sig in 640 x 480, and I see some new things I never noticed. 8.5/10... Just missing something. All it needs is some pro filter effects (i.e. some lightning or streamers) and it's a 10.
7/10 for the first one.Kinda blury and i can't get the whole picture. 6/10 for the second one,I don't get the spiderman feel.
1. 5/10 Try out some different brushes and alttle more grunge.. blend your renders more and work on your text.. 2. 5/10 same storey..
leaf one: 7/10, lil too simple other: 7/10, nice background both currents: 6/10, blended a little too much