I've been playing around with this in my basement lately. Last year I simply focused on something then tried to approximate the exact location. I used a regular lamp with a $5 softbox overtop from ebay. This year I've been playing around with Yongnuo 560IV's and the Tx and some ebay soft boxes on stands. I have a medium gray cloth hung on a dowel and two hooks. I can do some high or low key using this based on how I set up the flashes. I was also given an old small square LCD computer monitor. I now have it hooked up via a couple of cables. K3 -> HDMI -> DVI. I then shoot myself in live view so I can see when my face turns white (focus peaking). Unfortunately I still can't see it well enough (visually impaired--I normally sit six inches from my 27" monitor) so a lot of trial and error is needed. I started by using the self timer and running back and forth. I'm now using a cheap remote shutter release. I'm fairly pleased with some of the results. Here's a few. The one with the wide brimmed hat was last year with the cheap lamp and mini soft box. The suit is new and more sophisticated so I had to get more sophisticated with my selfies or soemthing.
https://drive.google.com/open?id=0B12dWDIYqmC0MVJKaWJ6TmpLMGM
This is coming from someone who can't really see himself in a mirror, but it does feel quite strange repeatedly posing and I guess coaching yourself for protraits. I never do selfies otherwise.