The standard face pull performed with a rope or handles is great for back development and posture. Here's how to make it even better.
Reach your hands through a band, anchoring the band along the outside of the wrists. Turn your palms down. Now use the standard "elbows up and out" form, pulling to your nose or forehead. Squeeze at the top.
The band will add side-to-side resistance, forcing you to fight hard to spread the band apart.
Sticking points are much like those really talkative, naked old men in your gym's locker room: you'd rather avoid them! Nothing's more frustrating than making good progress overall but failing to improve on the "big lifts" (bench press, squat, deadlift, military press, etc.)