I know that this can be the hardest thing when you’re just starting out, or you feel pressure with an inexperienced model, but trust me, talking to your model and telling her/him what you want them to do is going to make the WORLD of difference. If you simply say “GO!” and then hide behind your camera throughout the whole shoot, what you’ll find is your model will stay in one pose throughout most of the shoot. You’ll get the same shot over and over, and end up feeling frustrated that you didn’t get the shot you wanted.