You can use contact adhesive or weatherstrip adhesive to glue it on before bolting the fenders on and save yourself a massive headache on alignment, Don't know about pinstriping stencils, but have purchased several video's and done a little with pretty good results, you might consider watching some, practicing on some glass and doing your own, the thing about one shot striping paint is if you mess it up or don't like it a little paint thinner and its removed before cured and your back to square one and your base color/clear coat is unharmed. I am a huge fan about learning to do my own work, there is a million posts on here and elsewhere where folks get rooked by somebody or unsatisfactory results, You can't beat a man at his job but everybody starts somewhere, I pretty much can't blame anybody but myself on my rides! Best of luck Matthyj