The canopy areas have a marked outline to guide you when cutting for the vacuum form canopy. You will leave an extra 1/16" on the back canopy, so dont cut all the way to the line. You will leave the same amount on the front part of the canopy but just in the area where the 2 canopies meet. When i put these lines in, i went off photos of the real plane and did not allow for the layup thickness. If you want a little extra flange for the clear canopy to be glued to then this would be a good idea. Sorry for jumping around but i thought i should get to this before someone cuts this out wrong.