The whole rig cost less than a tank of petrol
One clip-on work lamp, one white bedsheet, and two chairs. That is the entire lighting package for the last performance video, and nothing in the frame gives it away.
Soft light is not expensive light. It is just light that has been given room to spread.
Placing the source
The lamp sits about forty-five degrees off the performer's nose and slightly above eye line, which keeps the shadow under the cheekbone rather than under the chin. The bedsheet hangs between the lamp and the performer, roughly a metre from the source — close enough to stay soft, far enough that the bulb does not scorch it. The sheet is doing the real work: a bare bulb at that distance is hard and unforgiving, and the same bulb through cloth reads like a small window.
Killing the spill
The back wall is the giveaway in every cheap setup. Pull the performer two metres off the wall and the falloff does the job for free — the background drops two stops darker without a single extra light. Anything still catching spill gets flagged with a dark towel clipped to a chair back.
What I would change
Two things. The first take had light bouncing off a pale floor into the underside of the jaw, which flattened everything; a dark blanket on the floor fixed it. The second was colour temperature — the lamp was tungsten and there was daylight leaking through a gap in the curtains, so the skin went two different colours across the shot. Close the curtains fully before you touch anything else.