can someone make a tutorial on how to edit the creeper in?
The Photoshop Way:
I use Photoshop. I pretty much just crop the creeper out with the "Quick Selection Tool", refine the edges and tank out with the smoothness option to get rid of rough edges. Also, if I am copping something like a lightsaber I tune up the edge detection.
Then I just drag it onto the picture I am adding the creeper to, and make any adjustments there.