I have a couple of MAC lipsticks - Plum and Bourbon from the limited edition Beauty Icon 3 collection - Catherine Deneuve. These lipsticks are demi-matte in their finish and have a tendency to "grab" and not apply smoothly. I remedied this problem by applying face primer to my lips - it gives "glide" to the application.
When applying lipstick, I finish by swiping lipstick inside my lower lip for a polished look. It also makes lips look fuller.