Don't go for easy BGz like space or something, also i noticed there is 2 different light sources, yellow and red, you should have either made both of them red, or both of the yellow, not one yellow or one red, or if you want o make one yellow and one red, then make the signature two parts, part yellow and part red. You have yellow and red light sources, so you should make half yellow and half red, if you want to keep it.