A stall is a very straight forward trick that you do not need to be very skilled to achieve. It can easily look great and feel awesome with minimal effort.
Once you have the basic balance achieved on a feature as above with even weight between both feet you’ll want to add some extra style. That will involve shifting your weight to you back leg. You can see this below.
You can practice this on the snow or at home before you try it on a stall. The key goal is to shift your board under your torso. Draw a line between your feet…
Pop (even weight jump) your board and push it forwards, so you get your back foot under your belly button and on the line you have in front of you without moving your upper body much.
It will be tough to do this movement when travelling as everything will come at you quite quickly. You need to start super slow and not even on the top of the feature so you can get the movement and timing on lock.
Improve your balance and control by trying the movement on something you need to balance upon.
To help focus towards the final goal you need to plan to get your front foot just to the lip of the stall. You then jump and move your back foot to where your foot foot was. You also do not need to try this on a park feature. You can just ride up a bank of snow and have a go. That way you can practice the trick and really dial it in for the park.