If you have a problem with left and right hand syncing up heres a little workout to fix that . Its a simple exercise, but you really have to focus in on when the patter repeats...thats the secret, you have to know when your picking down and up...


-{12}-13-15-(12)-13-15-{12}-13-15-(12)-13-15- etc....
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------------------------------------------------ {} Downstroke
------------------------------------------------ () Upstroke
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-{12}-13-15-13-{12}-13-15-13-{12}-13-15-13-{12}- etc...
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again try to focus on when you repeat the pattern.
As for runs scross multiple strings or string skipping, focus on the pick
direction as you move to another string, whether its down or up. This really
helps keep me in sync. Come up with your own patterns, success will not be that hard to attain.