I'm starting to learn when dealing with photography exactly what you want is exactly what you should shoot. It dawned on me (while culling through hundreds of pictures) that most of the shots I actually want are towards the end of the catalogs. It's after I've set the background(snap), set the lights(snap snap), adjust the hair(snap snap snap), the pose(snap snap snap snap), the composition( you get the picture) that my images toward the end are the ones I actually keep. I understand why I was doing it; I'm always trying to keep the models busy and in the moment, but by doing so I end up with tons of pictures.....sidebar-they are still some pretty good shots.....Again, it's a stepping stone and a learning experience. With each shoot make sure you jot down notes and things you would keep and change. The goal is to be as efficient as possible in the least amount of time as possible (at least for me it is). Know the shot. Shoot the shot! and don't forget to keep the shots down!