You don't own the rights to that style of signature dude. You should be happy he must have saw your sig and thought it was nice and wanted to try to make one like it. No sense in being mad at someone for trying to learn.^^

But anyways back on topic.

To be honest I this style of smudging but it's not bad, Text could have been blending and executed better, Wish there was more of an effect to the smudging.