How to make a vintage leather flat cap - Handmade DIY : r/howto
Flat Cap Pattern, paper Pattern by Tony Allen Bernier, Free Access to My Instructional Video on Youtube. - Etsy | Cap patterns, Flat cap, Mens hat pattern
How To Make Tiny Flat Caps - The Herdy Company
How to Make Flatcap : 18 Steps (with Pictures) - Instructables