RE: Shooting question.
If you continue to have problems yanking the trigger, try this:
Stand 5 yards in front of the target, draw and line your bow up at the target, close your eyes and concentrate on squeezing the trigger ( do this only in a safe environment). Do this 5-10 times and then back up to a comfortable distance and shoot with your eyes open aiming at a point on the target. You may have to do this several days in a row, but it works by taking your mind off everything but squeezing the trigger. It worked for me when I had this problem. As for aiming, I start low and pull up to the spot. Others like to come down or from the side. Find what works and stick with it.
good luck