My settings aren't anything special at all, lol. It's just a standard hard brush, 90~% strength, and size varying from 2-25. I also often use scatter on my smudging.
Nah, I don't. I haven't made any tuts yet, though I plan on it. Try not to aim for a signature similar to mine. Just focus on smudging (preferably blindly/without the aid of other's works) and see what can you do from there with your own style.