TDR has a tut here on how to avoid smudge and the result is better since you will have actual control over it
http://forums.hiveworkshop.com/showthread.php?t=30072
Teaching other people to smudge is horrible,they use it just becuase its "faster" but you cant really control it. Alot of people use it, but about 99% dont know how to use it properly, even me.
I use to use smudge, hell all of my old work pretty much had smudge or..burn or dodge and dam, my work looked like fucking crap that id use as toilet paper. Ever since TDR convinced me to stop using Smudge (it wasnt easy, since i was more of a flaming brat back then hmm..stil am...abit..) my works started to bloom out into different trees and i starting to use a wide range of diferent techniques, and experimenting with the brush(and the real life brush) also taught me the shades of colours you should use to shade and highlight and that also taught me alot in my traditional paintings, and i learnt from them and..blah blah..crap ..blah.although i still lack, im still learning, and with smudge, i wasnt learning at all.
So i suggest you guys try to practice without the smudge, study how things are seen in your view, how they can be achieved, how you will do it (without SMUDGE) and explore. I also highly recomend you start pencil sketching and painting since most artists who can study and learn to use the colours and shades in their life can transfer that to a computer.
(although most traditional artists i know completely drop computers since the suppress what programs can provide)
I am no master or lord or pro, merely stating my opinion, although id rather get a opinion from TDR, since he has greater study in the arts far better than anyone (yes, even me duh) that i know here.
I edited this since i was sounded like i was on crack.