Hand and Arm Posing Rules
Keep your Hands Soft
We're not just talking moisturizer: make your hands flow smoothly and, like with the feet, avoid sharp angles such as sharply-bent wrists. Fists are hard so avoid them. Imagine your hands moving smoothly and gracefully like the hands of a dancer. Also, keep your fingers slightly separated to give a more relaxed appearance.
A tip: Imagine you are holding a raw egg in your hand. If you make a fist, you make a mess.
Alberto Vargas
Arms away from the Body
As you work through your poses, keep the arms slightly away from the body, or at least avoid pressing them into your body.
William Albartus DeVorss