[1] The level is getting harder. Now, it is the key to capture a tail press as making a rock on the left side of the box.

[2] Getting on the box is the same as a nose press. It is like standing on one foot, transfering all weight on your hind leg.

[3] Difference from a nose press is that you open your fore-shoulder but not your rear-shoulder.
When getting on the box, you don't need to think about briniging the tail towards the front. It happens naturally through the moves.

[4] Relax and land.