[1] Contrary to Rock, approach from the left side of the box.
For the begining of your practice, get the feeling of riding on the box after putting your front foot on by putting it on the left side of the box. This enables you to get off aside whenever you want. Try to near the middle of the box as you get better.

[2] Here, you can either twist your upper body or totally look backwards. Now, You can arrange your style. A style sometime makes the trick truly different.
The line shown below is ideal track you should follow.

[3] Appeal your potential when getting out.