Thanks so much for the help, guys!
Matt, I really appreciate the very detailed description of the grip and shot technique. Especially since I have no "formal" training and have been learning everything I know from this forum. The bow sling is on my X-mas list and I think it will definitely help as well.
As for the anchoring point (string to nose), those pictures were taken soon after I took up the sport last Summer and my anchoring points were not very well established at the time. I conciously put the string on the end of my nose each time now. But thanks for pointing that out. It tells me you guys are paying attention to the details.
Another question. I've seen many timeswhere people recommend shooting with back tension, but I'm not really sure what that means. Can somebody please explain?