I'm submitting this to the #ProductionNotesContest. (This is my second entry.)
This time, I worked on two models simultaneously: the Messer Commander's unit and the Gaumann unit, both of which I had been meaning to build.
It was my first time building multiple models at once, and it was quite challenging.
However, considering things like painting the verniers and cleaning the airbrush, I think it was relatively efficient.
This time, as with previous entries, I wanted to create something fun and cool without requiring advanced techniques like gate mark removal or seam line removal, or being a professional. Therefore, I used an airbrush without a primer and did partial painting with a brush.

Messer Naked, Messer Gaumann's machine | H.B.'s Gunpla works