What happens next?

How to make a standing desk
Measure yourself.
The perfect standing workspace is one that's specifically suited for you. Before you attempt to construct your own desk or go on the hunt for another option, it will help to estimate a few basic body measurements.
Make a note of your overall height, the level of your eyeline and the distance between your hips, elbows and the floor. These rough measurements will come in handy later while working out the specifications for the standing desk that fits your build.