Certainly not a video and I am still a complete novice at all of this, but I will say that spraying Krystal using the Preval sprayer you can get at the big orange store really is easy as pie. You can get 3 to 4 coats of the stuff in half a day and be done with the bow. It dries to a very nice dull finish (if using the dull) and the smell goes away very quickly, unlike spar urethane which in my experience, lingers for months.
I just hang the bow from one of the tips using heavy mono fishing line, and from 10 or so inches away apply a light coating of the Krystal. I learned the hard way that it does not go on well if it's cold so if you're spraying in a unheated shop or basement, bring the mixed Krystal into a warm place and let it warm up. In half hour you can spray another coat - maybe an hour if you like to sand between coats. I do two light coats, then hang the bow from the other tip and do two more. I'm real happy with the stuff, and the quart size container from Big Jim should last a very long time so it's probably even cheaper than a rattle can finish in the long run.