Nice work on that instrument panel!
I like that pic with the explanations too. Btw, those two buttons labeled "landeklappen" left unmentioned above the flap control buttons are the landing gear controls.
Those yellow knobs would be the magneto switches, not propeller pitch controls. A switch per engine, for selecting how the two magnetos in each are to work. From the bottom: Off - number one on - number two on - both on.
Looking forward to seeing your take on the plane kits as well.