A good alround collection Josh. That M57 is a cracker, as is M27 and OC. The small version of M83 looks great but I think your focusing may have let you down a bit with that one. Btw, M31 is M13 in Hercules. If you waited a few more hours, just on dawn you would have gotten M31 but it would have been a big capture as the DSI would have needed to do a mosaic to fit it all in
Try not to feel uneasy, though I think many here, definately myself included, can understand where you are coming from. We all started out as newbies once upon a time. The general idea is, you post, we appreciate, offer positive critiques, you go away with new info and post your next round of improved shots.
The burning out of the stars is called sigma clipping and comes from either too long an exposure (individual exposures), or adjusting your white point too low when processing with curves or levels. Do you use a program that has a histogram to use when processing?
Do you use any form of focusing aid? If not think about trying a Hartmann mask for a while. There is a how to in the resouces section. Also do you use the IR filter that comes with the DSI? Consider taking it out and see how that goes. Also, if you haven't already, have a look at Ezystyles DSI shots from start to finish and see how far he has progressed in a short couple of months. He is the man to be pestering for info. I don't know too many others who are producing as many images a night as he is atm.
Good luck with the next round.