hey what is going on people i just go into making things like this i use photoshop cs2 and i need someone to help me or can give me some help on how to do better so if u can pm me or im on aim my sn is brianh501 or DJxSHUFFLE and hit me up i am on all day so yea thanks for your time and here is on art i just did below:
for that look i would suggest keeping the lighting consistent. as in, the shadows and highlights on each dude should be the same. on yours the one on the far left has far more intense lighting coming from behind him, but the others have lighting coming from the front and above. doesn't look realistic because of that.
and to cut them out better, so they aren't blurred at the edges, i recommend the pen tool + vector mask. search for pen tool tutorials for help on that.