Next time you follow a tut, follow a tutorial that actually creates a good looking signature. Gimmie a minute and I'll edit this post with three tutorials for you too try. Sound good?
Here we go, go in order. "ON Flames" tutorial by Ice, pretty simple and a great starter. Spoiler "Framing Hanley", another tutorial by Ice (<3). This one is a bit more complicated, but has some great outcomes. Spoiler "Saber-Chan" is by Mace. This one is probably the trickiest in this list, but has some cool outcomes as well. Spoiler Good luck, test some of those out.
Dude, stop with the italic text; it doesn't look good. Try following the tutorials RightSideTheory provided for you. Then, hopefully, it would turn out better and we can help you improve more.