I keep hearing PE and technique made your girl cum.
Im pretty sure we all have something different that we do, and sharing that would benefit us.
here is what i try at times,
1. 6 or 7 quick shallow (only penetrate 3 inches or so), then a long deep thrust, and using a combo of those shallow and deep thruts, changing it, so it doesnt get old.
2. finding a spot, then *sticking* to that spot.
3. grab her hips in a missionary from underneath, and thrust while dry lickin her earlobes, running my tounge (dry) on her ears.