This is an impressive origami creation and you can do it in less than an hour. The video is a step-by-step walkthrough, easy to follow but it helps if you’ve some paper folding experience already.
If you want to speed watch to follow the process but don’t intend to follow along you can use the YouTube x2 speed option. You’ll be able to see just how many pre-folds are needed, getting the sheet of paper into shape before we begins to make changes that reduce the surface area.
The way Darth Vader slowly emerges from a sheet of black paper is pretty impressive.