My spriting needs help

[Omnikariz]

Already looking much better! The only other things I can think of right now is some of jagged lines, the worst of it is on the head, and your background colour. The high saturated hot pink colour is really hard on the eyes, go for something more along the lines of a very unsaturated green.
(As seen in the picture below.)

I didn't do much with the sprite this time, I just rounded out the head a bit, these make a world of a difference though.