It's much easier on a big, smooth kicker.
When you rotate off a mogul you have to huck.
To rotate off a kicker you have to spin.
It's much more dangerous on a mogul than it is on a kicker. You can spin with your head, shoulders, or hips, whatever feels more comfortable for you.
First make sure you are very comfortable on the kicker doing straight airs and 180s.
The easy trick is to take a house or a tree or a big orange object behind the kicker, and as you pop off, you look over your shoulder until you see the object and then you land. But after you get that try watching the landing, and try spinning with your shoulders or even better with your hips.
360 are also very easy to practice in your bedroom. Same principle take an object right in front of you, jump up, look over your shoulder to focus on the object en stomp it. Then, wind your body up like a spring: you turn your shoulders 180 degrees, jump up, focus on the same object and off you go. Finally, do the same with your arms crossed, so you are forced to spin with your hips. Haha.