the gesture feels off , specialy at the torso

Set out to do 100 Loomis Heads; got carried away. Tried different angles and models. My deficiencies are even more evident to me after drawing these: Proportional, angular, anatomical, observational, line quality, precision, neatness, consistency, etc. Lot's of room for improvement. I'd like to eventually capture a likeness. These are all smallish too. The sheets are 6"x9". I don't know. I will be re-watching the videos and practicing more. Hope everyone is doing well. Thank you.