Freestyle 360 on skis

Most people reading this probably have twin tip skis. Twin tips are not there so that you can bail out of a 360 half way...
This mindset will not help you learn a 360.

When you decide to try a 360 you need to focus on a full rotation. Pick a spot in front of the jump and don't stop looking until you are back around to that same point.

Approach the jump, don't be afraid of speed. You need to clear the jump and give yourself enough time to complete the rotation.

Pop evenly off the jump and set your rotation by popping and turning your shoulders and head in the direction of the spin, the rest of your body will follow.

KEEP LOOKING for the spot downhill you picked. Another technique used to even out your landing is to look for a spot 3/4 of the way around and lock eyes on it, this will allow you to even out your body as your rotation finishes and slow your rotation for the landing.
Before you try this practice getting the full rotation down.

As you complete your rotation extend your arms and get ready to absorb the landing.
Some people spin very straight legged to begin with, it is important to set up for landing so you don't hurt your knees.

Stomp it and know that once you have done one you can do another.

Here are a couple of great tips from experts :

"I'm gonna have to disagree with more speed is better. Also you shouldn't need to wind up very much for a 360. It's only one rotation, more than one and yes you will need to wind up a bit.

The easiest way to learn how to spin a 3 is to find a small bump you can get a few inches of air off of.
Hit it going across the hill if possible, this way if you yard sale you wont slide too far down the hill. As you come to the top of the bump, plant the pole in the hand of the direction you want to spin, and do a jump turn while popping straight up with your legs. You'll need to adjust your speed after you get the feel for the bump, but keep looking over your shoulder in the direction you are spinning.
If you stop looking you will stop spinning.
As you get about 3/4 around spot your landing and focus on that. once you get the spin down with the pole plant, work on removing the pole plant.
You don't have to start big, you'll be a more rounded skier if you start small and then go bigger. Hope this helps."
- redstapler52

Visualise your jumps before you try :

" A huge part of skiing, going huge in particular, is visualization.
The night before you hit that jump, play it successfully over and over and over and over and over in your head until you can see yourself landing it perfectly. Picture the exact jump, the exact clothes you'll be wearing, the exact trick, all the way down until you stomp the landing.

Once you can do that, you got the visualization part down. If you're not too good at visualizing, then imagine what it will sound like - your friends yelling out loud after you stomp it - whatever suits you bro.
Then, the day before you hit it, listen to a really intense song , something that will get you pumped. As you're hitting the jump, replay that perfect landing once more on your way - and go into that trick with only one thought: "I'm going to stomp this trick and it's gonna look sick."
Then, after you actually hit it, and nail the trick perfectly, come back to your computer and give me a best answer = )

good luck bro"