1. I know it sounds strange but cattle artificial insemination gloves are awesome. These gloves are the best to have when you're field dressing a deer. I keep two or three pairs in my pack. They run the length of you entire arm. Nothing worse that driving home with gut smell on your sleeve. Not my idea, I learned it from a guide when I went to Wyoming once.
http://www.enasco.com/product/C30309N
2. A solid head lamp (petzel tikka, princeton, etc etc) is an absolute must for doing it at night.
3. Deer and other animals similar to deer have more organ attachments on their left side vice their right. If possible, dress left side up.