My 1st and 2nd work in GIMP

[Arzoroc]

It's okay now, and the image looks way better right now with the gradient maps. Now the "you" has to be fixed (more contrast, same lighting, better rendering) and it's a whole new image

[virtualTune]

i highly suggest you do your next piece without a person its easier to begin with

[sagteck]

I can see them just fine, though the OP may have fixed it before I looked.

I like the second one. Reminds me of old 8 bit video game graphics like Duke Nukem 3D or Castle Wolfenstein.