I finished my alcohol stove, using the instructions found in this video:

I finally purchased some denatured alcohol from the store and tonight I got to try it out! I filled the stove's "cup" 1.5 times, pre-heated the bottom of the stove with the lighter, and lit the stove...
and nothing happened. (There might have been a small flame, but not visible without me standing in the way of the background light.)
After a couple of tries, I was able to get a flame going, but it would burn out after a second or two. I refilled the stove and tried again, with the same results.

I am curious is maybe I fiddled with the cans too long, so that the fuel cannot pressurize? Or perhaps I used the wrong kind of insulation (I just grabbed a handful from the attic)?

I'm going to get some more cans and try another one, but I'd love to know what I'm doing wrong with this one!
More adventure in your life today.