need help

I'm trying to vacuuform some lenses for a Madness Combat mask I'm working on. The bucks are resin printed, and originally the thermoplastic would pick up the print lines when I'd do pulls, so I decided to sand out the print lines on the bucks to a glasslike finish. Upon attempting to vacuuform...

So I want to be Spider man Ultimate(mile morales) at my Highschool's Openhouse but can not find any shop that sales costume in my country and to tailor it charges too much for a highschooler like me and will be too late for the deadline that will be in next week. So now I've already ordered...