^^^There's nothing wrong about posting your opinion when you're new
These are all commented out of order btw:
I like #2 the most because of the colors clashing together, they go well together imo because they stand out
#1 is alright, it seems that the render is kinda blurry tho, maybe just because I'm tired lol
#3 is similar to #2 in reference to color, renders used, and the border but I don't like it as much because of the texture on top of it. It takes away from it imo
#4 is ok, the only real problem I have is the text on this one. It takes away from an otherwise good sig. I'd also blend Vin Diesel in, go around the edges render with a soft round eraser. Be careful not to erase too much as it will look kinda awkward.