First thing I noticed in your pics is that you may be a touch long on draw length. Try shortening it a 1/2 inch. Your draw elbow looks to be angled slightly toward the floor. Not much, just a little. I can shoot an honest 28 1/2 off a string loop but feel more comfortable at 28.

As for form and accuracy. Talk to any good shooter, especially target shooters and they will tell you that consistant form is #1 to accuracy. The catch is the fact that you must find a combination of draw length, anchor and grip that is very comfortable to you. If you can find this, you will find it much easier to repeat this form. If something is out of whack, you'll notice it almost immediately because it just feels funny. A little trick to help you find this repeatable form is to stand at the line using a comfortable stance, head up and looking toward the target. Now close your eyes and draw the bow, settle in to your anchor.Open your eyes. Does everything just fall into place without you have to move anything? If not, you're probably not where you need to be. I can do this same thing, open my eyes and my peep is already aligned to my sight. It really helps, try it.