The biggest change for me was not grabbing the door on your way out. That was ingrained in me from when I was a kid. Dad was a jumpmaster and would literally say "Stand in the door" when we got out of the car. The door position was hands on either side of the door to propel yourself out. Then they changed it so you kept your hands on the reserve which I could never get used to. As an O, I often got the privilege of being the first out and even on my last jump I tried to grab the door. The worst was the time I was about halfway down the stick and ended up back in the door when we had to make a second pass. I stood there about 2 feet from the door, hands on the reserve, while we banked hard, me trying to grip the floor with my toes through my boots. It took everything I had not to just fall out.
I was on jump status at Fort Campbell, believe it or not, and then of course at Fort Polk, JRTC. Only ended up with 25 jumps total, but last 5 came after I tore my PCL so I figure that was enough.
Enjoy it.