I’ve found that if you paint an a/c that you want to finsih in NMF, spary it flat black first!
Once the NMF is sprayed on, us a dental pick/scribing tool to remove the NMF and it leaves great panel lines.
Spray clear to seal and provide a base for decals and further wash and a final coat of dullcoate.
Try it, Mikey, you’ll like it!