I think Arthur has nailed it with your grip ,it's so easy to forget that part of your form,he's set out some good advice for you .Don't forget do not drop your arm keep it up and keep it consistant with your grip.I'd definately go with the release it just help's make your release a little more consistant than finger's . I also believe as Arthur say's every time you bring your bow up and draw your peep should be right there automatically,so be sure your peep is set correctly.If your shooting from a treestand ,bend at the waist and keep your arm up .
Make yourself out a check list of thing's to remember when setting up for a shot everytime .Some guy's I've heard that they'll tape a small list on the inside of their riser ,that they can see every time they pull their bow up.This just remind's you everytime you draw.

1. Grip [no torque]
2. Bowarm [up]
3 Stance [turn your body slightly toward's your target with your feet slightly seperated ]
4.easy release
5. let bow drop on it's own

nubo