How is it that being a prick? You've spotted something you don't like and you're making it known to him, suggesting how to improve it. That's constructive criticism, nothing wrong with it.
Even if the font makes it so there's a big gap between the first letter and the rest of a word, it doesn't mean you have to stick with that. You can reduce the gap either by cutting and pasting the first letter or reducing the spacing when you set the text parameters. It would look much better.
The stroke on the text is too thick, it makes it look very amateurish IMO and I'm not fond of pixel fonts but they look really poor when they're blurred like that. There's usually a specific size they look best at (depending on the font) and going outside of that makes it blurred. Either use the non-blur size or use a non-pixel font.
The glow around the main Johnny cut needs to go, either make it less noticeable or find a different way to single out that cut as the main focus of the graphic. On the positive side of things the background and the blending looks good. Work on the other stuff and you could improve this to a solid sig.
It would make me a prick, because I cannot design, therefore I can't really "diss" the work of other people when I couldn't do any better myself