This thread is straight up ridiculous. Listen OP... you're not going to be able to think your way through the 360 by analyzing every single movement you may or may not have made. All you have to do is spend hours and hours out there on the hill trying to chuck 3s off every single thing you find. You're going to eat shit over and over and over and over but eventually you'll get the hang of it. Snowboarding isn't something you can learn by talking about it or by watching videos all day. Nothing is more valuable in the process than spending all the time you possibly can out on the hill
True and at the same time, not true. Over the internet, it's hard to correct specific things without video, so what you say is true. And at the same time, putting all that stuff together is mostly forcing your muscles to learn the timing, space and motions.
But, there are specific mechanics that are used to spin efficiently and stylishly and all freestylers use the same basic mechanics with small variations. So if you are able to correct specific details, it can oftentimes lead to drastic improvements and for the aforementioned reason.
OP, don't wind up with your head, just your shoulders and core. When you release your snap, you lock your hips, knees, core and shoulders all together and this happens the same time you pop off the lip and look over your lead shoulder, chin to your lead shoulder. I promise if you get the timing right and have a set up turn like Cr0 pointed a picture of, you will be able to spin. Don't think about all the stuff as you are coming into the lip, just do it. After you do it, then post critique to figure out which element you did well and didn't do well.
One way to cheat and get a headstart before you even get to the mountain is to jump a bunch of 3's with your board in your house. Just don't whack any walls/furniture, you can do some real damage. Put the SA video (or any other video where you can pretend to time with the riding coming off the lip) and practice that way. It does work, as stupid as it sounds.