I used this set recently on my Special Hobby Ju388J kitbash (with a Revell Ju88C) and it was near perfect! It is always a concern that masks might not fit properly or (vinyl) might not stick or conform, but there were no such problems here. Using lacquer paints, I left them on for a week or more and they came off fine. They were also tough enough to put up with a little touchup filling and sanding along the canopy edges after masking and priming. I never thought anyone would bother to make masks for the obscure subjects I have in my stash, but the savings in time and frustration are well worth it for a great result (especially on vac canopies!). The two copies were hardly needed but I did need to use a small triangle when one came off- you might want to replace these with tape. One tiny triangle window was left off the art but was easy to cut myself from spare material. I recommend doing what I did: bulk order all the masks you need for upcoming projects, with vinyl for the flat or simple curves and tape for the more complex.