https://learn.lindsayadlerphotography.com/tutorial/posing-pitfalls/

Posing is an art form that gives you a great deal of power to flatter your subject. A pose can be used to flatter your subject by showcasing and drawing attention to a their strengths, while downplaying any ‘weaknesses’. Unfortunately, small details can ruin an otherwise beautiful pose. These common problems can be unflattering to your subject or create distracting elements that you cannot look away from! No matter how many poses you try to memorize or how beautiful your subject, the shots will be ruined if you don’t pay attention to very common posing pitfalls.