Where have I been? I have completely missed this thread, sorry about that, Simon! This is a project near and dear to my heart! A Wachtmeister of Kürassiers from the Kaiser's Army, and in 1/32 scale, too. I will follow this going forward, you can be sure.
Also, I'm studying how you did the Mütze. I have a similar project planned, and that's to take the old Sanderson figure of a British sergeant and his wife, and convert him to a German for my Kaiser's Army collection. I'll give him the peaked cap. I have a couple of the kits, so I may convert another one to wear a Pickelhaube, too.
Prost!
Brad