I would say matter of practice the GT metronome will help you develop speed over time also your finger muscles have to memorize the feel so the more you play it the better it will come out i also would like to add alternate picking can be very helpful so give it a thought this lesson is for speed building http://www.guitartricks.com/lesson.php?input=16289 heres a lesson for alternate picking http://www.guitartricks.com/lesson.php?input=16045 alternatively you can type speed or alternate picking in the search box there our many many lessons on these