Great looking metal work! I'm only very slowly gaining experience with soldering (both regular and silver soldering). I think the geometry of this tail bracket along with the undercarriage is really the most difficult part of an EIII. It took me absolutely forever to figure out a system for the stab and rudder of my EIII. I ended up using a tail wheel bracket on the top of the rudder and an A-frame of wires (later covered with styrene tubing) for the lower bracket so that I piece of music wire run through the bracket, through the rudder, through the top bracket and then back into the rudder like a hinge. Attaching the stab basically involved large amounts of epoxy, some large styrene tubes, and a couple of computer ties. All painted up later to look like welded (and painted) steel tubing.

Who know how I might have approach it if I had know how to solder at that point. BTW, it looks like you're going for a Pfalz EIII, is this right? Unless of course it turns out as something else!