dude i got the same problem. iv been playin for 5 years now and i cant play any cool metal licks. u know the kinds that r like: meedly meedly meedly meedly meedly MEEEEEEEE!!!!!! but neways. iv seen ppl that hav playd for less than i have and can tare it up. and i know that i just need to practice. but i do. all day. everyday. but i only play songs that i know well and easy rythem stuff. so just the word "practice" doesnt really work cus its too broad of a term. i relized that i need to practice exercise riffs. everytime i pick up the guitar i play exercise riffs for like 20 mins. theres some really cool exercise riff on this site. iv been noticing my speed and dextarity has improved.