Get a metronome and play it very slowly, include the full step bend on the 21st fret and the vibrato as well. What I mean it play the entire phrase along with a metronome. The tempo of this song is pretty slow anyway. So you may need to set the metrnome real slow. Use alternate picking (up/down/up/down) as well.
Good luck with this one, it's a challenge. But you can do it!!!!!
Shane
