Watch the Auto-Wah Groove online guitar lesson by Shane Theriot from Rhythm Mojo
Notice the way I'm voicing the C#7(#9) chord here, as it's important. It allows you to free up your index finger and play extentions of the chord. Rather than just play the idea with the strumming hand only, the pick and finger technique makes the part bite a little more and gives you more control over the attack. Notice the way I may vary the syncopation and rhythm, but the pulse never goes away. This will come with practice and by playing with great drummers.