Yeah Adam, the mirror effect is obtained from cutting little pieces of Party mirrored confetti or mirror tassels you see on birthdays noise makers, party whistles! I used the size of the exterior vision bloc to cut the film to the right dimension! Some tassels are of the right width! Bonus!
Then I glued it to the vision bloc with a small dab of white glue! Since most vision blocks are treated for laser dasslers protection...now a days.... They appear Redish or purple at different viewing angles! In the old days.... They appeared greenish due to the many layers of glass they are made of!
Good luck!
Norm.
Out!