Odds of Getting In
Because most states don't require any kind of licensing program, the only thing holding you back from a career as a glazier is, well, yourself. If you enjoy the kind of hands on work where brawn meets beauty, you should have no problem getting into the glazier trade. You need only interest in the craft mixed with some mathematical skills. Find an apprenticeship opportunity, work hard, and before you know it, you'll be doing your own kind of G (y'know, glazier) thing.