Need advices for a rpg character sprite sheet

[Cobalt Blue]

Edit : My problem is principally about making the hair in all 8 directions, I must precise.

thats because you put basically zero thoughs on how does that hair behaves on a 3D enviroment. all you did was drawing a volume-ness shaoe over his head and expected it would work, like most anime hairs.

as it is now, its basically a flat sign pasted over his forehead.