How can I keep my little finger down when i'm doing runs and stuff, cause I have like no control over it!
Just practice building indapendancy? and strength in it, it came fairly soon for me.... practice doing stuff like -

&&  do it with a metranome... tick... tock.. tick..tock =P
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Try doing the riffs slowly at first, note by note and focus you attention on your pinky. You should relax your hand. If you really manage it, your pinky should come down by itself. it's all just a mater of patience and practise. (Like most things actually) It's not nessecarily a mistake if your pinky points up form time to time, but you should try keeping it down, because when it's up it brings unwanted tension to your hand.
I am the passion. I am the warfare.
Chromatic scales man, chromatic scales
...And the worms ate into his brain.
Next time, you should post anything regarding technique in the A. Technique forum please.