Watch the b3 (With Smear), 1 online guitar lesson by Brad Carlton from Guitar Lab: Bulls Eye Blues Riffs
Example 20 is very important as your goal is to emulate the human voice singing a blues phrase. You will play the b3 and then right before you go to the next note you will bend it ever so slightly. You do not want to hear a release of that bent note before you strike the 1. Be sure to sing what your playing so you will ultimately be able to play what you sing.