Watch the Hard Road online guitar lesson by Jeff McErlain from 50 Eclectic Blues Licks You MUST Know
Hang on, here is tough one but well worth it. I actually lifted it from the great Robben Ford and have put it to great use myself. Super cool chromatic approach notes here on the turnaround of an A blues.
TAKE IT SLOWLY, really slowly. Loop the background and play that sucker a million times until you can nail it. This is the only way you will be able to pull a lick like this off. The added benefit is by learning this lick, the skills you develop and the sounds used will have an effect on other things you play. So by practicing one thing we are really practicing many things.