Paul,
If you came to me, here is what I'd have you try.
Your bow hand is too deep into the grip of the bow. This is "built in" torque. Do a search on this forum for a thread called "grip question" for a suggested grip.
Your string hand thumb is sticking straight up. Many shoot OK this way but I would have you try getting that thumb down so it disappears into the palm of your hand. This will greatly reduce tension in your string hand and help with a smoother release.
Finally, don't try to resist the natural recoil of your sting hand and arm. Let it go in it's natural direction (back). Trying to hold it static on your face makes you use muscles that are not needed for the shot and causes a collapse in your shot as you try to anticipate the release and stop your hand from moving.
Arne