I know you may be new to signature making but this goes for anyone. Whenever you're making a tag or any type of graphic art except surrealism or something along those lines, think of dimension. Even a two dimensional image still has three dimensional characteristics. For instance, in this signature the render, or the guy, is off the canvas which will insinuate the he's in front of the canvas because that's they way our mind perceives it. If he was off the canvas at the top it would create a look that would imply he is coming out of the picture. So if you're going to use an effect like this or if you're trying to create dimension within your piece you need to establish it. In this signature the guy is "in front of" the canvas but at the same time it looks like he is a part of the canvas (i.e. the smudging coming off of the render). Anyways, I'm done my rant.. hopefully someone will get something from this if it made any sense.