I've been practicing that "Melodic Metal Exercise" from ActiveBass
http://www.activebass.com/default.asp?src=l&l=12692&p=1
and it has really pointed out some flaws in my fretting hand technique.
For one, my pinky won't curve. Normally when I am just noodling or playing scales my pinky will assume a natural, comfortable shape. But playing like this makes my pinky lock in a weird position and mutes the high notes unless I make a concious effort to lift it. Second, my index finger comes too high off the fretboard when I'm not using it. And last, I have developed a blister on my pinky that obviously shows I'm not fretting correctly with it because the blister is more to the outside of my hand than the center of my finger.
So what are some good tips you can give me to fix my problems? I am trying to build speed in my left hand, as I can play really fast with my right but above 120bpm I start mis-fretting notes and sounding really lousy.