The only way I could coordinate my hands in really fast playing was to start slow with something that is consistently fast. Get the sheet music to Paganini's "Perpetual Motion" (
Moto Perpetuo) and start with your metronome (you have a metronome, right?) at about 80 bpm, or as fast as you can handle while still keeping it CLEAN. Pick every note, no legato allowed!
Remember, you want to get coordination, so accuracy is far more important than the setting on your metronome. If you can't keep up, bump the metronome down. NO SLOP! Accuracy.
Play it a few times at your metronome setting of choice, then go play something else. Tomorrow, set your metronome 5 bpm faster and repeat.
Every day or so, bump up your metronome. Before you know it, you'll be burning up the fretboard and your pick hand will be flying along effortlessly.
