Early edge change matters a lot and JD has some good advice there. Start doing that at 28 and 32 -- push it earlier and earlier. I also agree with bmiller and OB. I ski a ton of 32s, and optimally you should be 100% (or dang close to it) at 32 before beating yourself up at 35, in my view. If you can make yourself do that, then 35 will come more quickly, and with less risk of injury.
The one thing I notice most at 35 and 38 is that I need to slow down, like OB says. It's odd, but I can feel really slow going through the gate, and my pass is terrific -- early to the ball, tight line, easy transitions. I can run 35 with a fast gate too, but it feels like a scramble the whole way down -- sort of turn, pull, turn, pull, turn, pull. That is not the way to run 35. Relax and slow down. Contrary to what we all think, you don't need to fly through the gates, and you don't need a long pull. Start as wide as you can, turn in slow and easy, and keep your handle with you as you edge change off the second wake.