Thanks guys! I have tried by cutting masks the old school way and then scanning them in, just struggling to find how much smaller I should make them for the inside.
I tried a fairly basic canopy, and that worked more or less okay, also tried the new Kinetic F-16AM (no masks out for that one yet), but the extremely complex curve of that canopy (it's one giant bubble) makes it hard to do. I made something that kind of works, but not sure if it is good enough.
I have found that the automatic tracing feature of Studio is not really amazing, it struggles making right angles where needed, tends to round them off, and straight lines can go a bit wonky.