Well, since you're not new to the backcountry, not much to offer that you probably don't already know. A few thoughts:
-Learn to process at the kill site. I didn't even consider this until I moved out west. I made some hellish drags in my younger days.
-Be especially head's up when you are using your knife. Especially if you are tired or excited, or distracted.
-Dress right. Cotton kills. Keep your wits about you. I canoed 7 miles into the Adirondacks with a buddy some years ago and we had a cold rain one afternoon. I parked myself under a big deadfall and waited it out. On the hike back to camp, steam was rollin' off my layers of wool and poly. I was bone dry when I got to camp. When I arrived I saw my buddy's sopping wet cotton shirt and sweatshirt hanging outside the tent, a failed fire in the ring, and him in the tent nearly hypothermic. I got the fire going, fed us, and then shared my wool and poly with him for the evening and following day, til the weather cleared. I would go to thrift stores and find "Shetland wool" (reprocessed wool) turtlenecks for cheap. They've been the best, lightest, warmest, undergarment I've owned. Actually too warm for most uses.
-Be aware of when you are at all fatigued. When I notice the first mis-step, I say to myself "You're tiring. Be careful." I say it so that I acknowledge it. You don't need a twisted ankle, or worse.
-And of course, don't go alone unless you know the ropes really well. And let loved ones know where and when.
Lesseee...
-Look for hanger's -dead trees over your tent site.
-Plan for trouble. I once popped a hole in my tent roof during a nasty snow squall wiping water off a broadhead. A piece of duct tape made a quick patch. I carry some wrapped on a short piece of dowel in my "tool kit".
-Pretest ALL gear you haven't used before.