Working the head is a very important part of a blowjob experience, as it's often quite sensitive and its stimulation is often what ushers forth an orgasm or helps with erection.
It's just easy with her, but never routine.
You can't help watching the way her purple lace panties perfectly accentuate the curve of her behind, and it combines with her phenomenal blowjob skills to push you right over the edge.