What Art said is perfect. Now, keeping all that in mind. Your form is pretty good, some small tweaks that he suggests and I would also suggest you make them BEFORE you shorten the bow.

Some suggestions to break the habits (use to do these with students when I taught )

- When you draw your bow, put ALL your weight on your left foot. Just keep the toe of your right foot on the ground for balance. When you do this you are checking two things: 1) To much draw weight, if you can't do this you have to much. 2) Keeps you from leaning back.

- Bow shoulder. Make sure its down in teh proper position before drawing. Start with your arm lowered and then raise it making sure NOT to roll the shoulder up and it. Now draw. When combined with the above one, its pretty hard to roll the shoulder into the position you have without noticing it.

- check your elbow at full draw. I like the arm not locked out, but the inside of the elbow should more face the bow than the sky.

Once you align these things (and the grip, though that's not bad), Post another picture to check draw length at that point.

Oh, and use an arrow! You may not ruin your bow on one dry fire, but then again , you might. and its really loud when you do it (from experience!)