That looks good. You will get frustrated catching your thread on the lever for awhile until you get used to it, then you won't really notice it. The cam lever looks better than my bolt with a wing nut. Good job.
David
Type in "face mask", I got 78 threads not all were biker masks but a lot were. I would like to see it when you get it done. It is one of those projects on my list I haven't got to yet.
David