I fixed the text on the Fuu sig.
Thats a good idea. if i find good mugen and jin pics i will definetly do that.
About filling in the sig. Its all up to you. I like to use shapes. (shape tool) making my own or going to the adobe site and finding some.
With color of the sig i base it off the image im using. Like the fuu one was dark. I took the sample brown color from her hair and based everything off that.
Any other specific questions and ill answer
