Assuming we each get the picture we set out to make (and we really have to think that !) we'll each have a a technique that suits what we do. I think as long as we are talking technique that leads to toward portraiture, we can talk about that here. For instance, I work with a big camera and with a small camera. I usually use a big camera when the subject is bouncing around, and the energy needs to concentrated. On the other hand, a 35 AF helps when a subject is uncertain about the whole thing, and walking about helps the process. For this picture, her dad and I planted a 4x5 press camera on a heavy tripod and used a 10" lens. He is a fine photographer in his own right, and was a cheerful and amused assistant. We worked in a backyard under an October, overcast sky, and the sitter lay down on a sheet of plywood that had been raised at the end facing the camera, to let her face up into the light. I buried her with fallen leaves to make it fun, and shot with Polaroid 55/PN. The first couple shots I made were boring, but her big rowdy hairy dog came over by the camera, wondering what was going on. 1/10th of a second after the shutter tripped, the dog jumped on the kid, leaves flew everywhere, the kid chased the dog, and the sitting was officially concluded. I usually mask a 4x5 ground glass down to 3 1/2 x 4 because I just like an 8x9 proportion, and leaving plenty of room around the subject masks my errors, makes the process more relaxed, and allows for chance to provide a Lagniappe... like a big hairy dog.