Position of Wrists

Well thus far I find my basic contact with the ball and balance to be getting a little better. I found that I was opening my hips too much on the backswing and not creating any resistence with the upper body. So fixing that has helped. Also i'm not trying to go back as far on the backswing. The other day I went to the course for the first time, and yea didn't fare too well. I was thinking too much and not watching the ball as I swung through it. Enough about me..my question is about the wrists. I've been reading lots of different net articles about swinging..and I found that you are supposed to more or less have the, "head pointing to the sky, at hip high" or something like that. Anytime I try and consciously alter my wrist movement it just destroys my swing. I read that its supposed to be a natural movement on the downswing, but I probably don't have a good enough swing for it to happen properly. Also I know you are supposed to keep the left arm straight, so anytime I try and do anything with my wrists it violates this principal.