Hey Kaye. You can try using the 1st pentatonic shape.
Alright say the song is in the key of E. You solo either on the open string or the 12th fret. I'm just talking about octaves and the 1st shape of pentatonic scale.
Try to get some blues backings and solo the shape over it. I advise you to go over the shape a few times with the backing, 0 3 0 2 0 2 0 2 0 3 0 3.
Until you're ok with the timing and stuffs, add bends, vibratos, pulls offs, hammer on. Try to get the accuracy 1st, use a metronome. (
www.metronomeonline.com) Its free 8)
Don't focus too much on speed 1st, try doing slow, try to "catch" your feel, and until you're comfortable with the shape, speed it up. Speeding up the licks is one way in playing fast. Additionally you can do chromatic runs/string skipping exercises/economy picking/alternate picking and so on. Start at slow speed, make sure your notes ring out loud and clear. Then "accelerate".