I think the correct place this should be is in the graphic section, not sprite projects(as wips).
First of, glaysonmestre, welcome. Second, try using the correct proportions from SFZ to KoF:
SFA/Versus -> KOF/SvC.
Also, if you want to do something closer to KoF than Capcom just resized, be careful with details such as the hands. Capcom did a more cartoonish art than SNK. And of course, the best suggestion you will ever receive about spriting: practice, practice and practice.
Have a nice day!
I swear there was something cool here!!