Small update again. I've finally completed my second
signature tutorial.
I've uploaded it at dA and if you want a read about basic smudging and sharpen I advise you to take a look.
http://atomicox.deviantart.com/art/A...orial-89725700
I hope it's useful. If you have more questions that isn't answered in it, you can ask me here I might be able to help.
If you find any errors, please tell me so I can correct them.