i recognize the design from a game i played as a kid it was decent but i think you should make your own sprites so they don't go blurry to sharp and maybe ad a grass plain with sky as your background just something to make it look a bit nicer.
Charge!, is a simple, turn based, 8-bit animation game.
To play click one of the icons to either...
Charge: Recieve one Charge.
Attack: Attack the other person using one charge.
Block: Block an attack. Does not use Charge.