Thank you Francois, Rowan, Keith, Mal, and Big Ton !
Francois - I cut open the wheel wells and added an engine from a derelict DML Ta 152 kit. The engine was wired and plumbed. I added hydraulic and electrical lines, along with the tailwheel retractor cables, to the gear legs with fine copper wire and solder. The aerial is a strand of speaker wire, which can be bent to the appropriate "droop" of the real thing. Kit details include photoetch parts, as well as white metal exhausts, gear legs, and tailwheel. The gun & cannon barrels are copper tubing, also from the kit. Most of the detail comes from the box, and adding little things finish it.
Keith - the aerial is a strand of speaker wire, and I cut short lengths of solder for the gear indicators. The kit has steel wire for these, but it's almost impossible to cut. There is a gauge on the instruction sheet for cutting the appropriate length.
I do all of my builds clean. I figure that weathering is a part of the environment. Since I don't do bases or dios (no room to start doing that !), weathering looks odd to me on a clean shelf. Almost like a clean bird in a wartime dio, but in reverse. Of course, we're all free to build 'em the way we want 'em. This is just how I prefermine.
Mal - the aerial passes over the top of the headrest, through a fitting on the canopy rail hardware, and to the flat portion of the fuselage under the rear of the canopy. Ifyou look very carefully at the third pic, you'll see it under the framing over the top of the hood (and on top of the headrest).
Big Ton - yes, the camo is freehand. The lower surfaces were masked for the metal and RLM 75 on the front of the wing. The topsides were only masked at the top of the cowling, and at the wingroots. The green gun cover would have been difficult to mask, so that is freehand also.
Thanks again for all the kind words ! It's a pleasure to share my efforts with you.