Besides the fourth, fifth and sig nuimber 8, 9 and 10, the rest look like unalterered images. The powerpuff sig is cute thouhg and perhaps you could blend the last sig more. My favourite has to be the fourth sig, it all goes together great. Keep it up.
I like the fourth, it is the only one you put alot of time on. the others look like images. anyway, they all look great. keep it Up, let us see more of your creation.