Whaat's Sprites

[Whaat]

Okay, i remade this:

To this:

And here is my progress:

So now i am asking YOU, pro spriters, what am i doing wroing? I´m still not pleased with the outcome cuz i think the head is too big even if it´s LF proported and when i prefer my sprites to PF´s, PF´s sprites are somekinda smoother or smthing (is it becouse i use GIMP and he uses photoshop)? Would black back color help anything or is it better to be transparent?
Inspiration i got from Apoc´s dark chars, especially the dark Davis is veery cool and it made me go silent for awhile after i got it to GIMP and zoomed it so i could check what i am doing wrong :/
E. Changed two last ones´ fingers, left hand, sixpack and flame.
E2. Made vid:
Going little too fast, eh xp ?