Welcome Mark! Nice classic Brit bike.
I had a 1977 Bonnie - nice bike, but horrible brakes in the wet. I alway remember the botty puckering delay whilst the rotors decided to shed water before gripping.
I was given a 1989 Kawasaki 440 recently which I'm going to make a new set of clothes for. Think I started a thread on here somewhere, but there is a thread here on the Ducati Imola tank I made a few years back.
In some respects a tank is perhaps easier to form than the side panels and guards.
Main thing is to grab some sheet and start to make scrap
Good luck and please post plenty of pictures.