The original intention was to have 2 versions, one that attaches to the top, so the mouth would a gap, and a version with attaches like a normal toa head, so instead of an empty gap, it’ll be a concave (because you can’t attach an axle to a gap).
But it’s one of those things I’ll figure out as I 3D model, or I would if I had the time to. I’ve still got 2 more weeks of college submissions so that’s that.
I wanted to sketch out a side view, but clearly I need some improvement in my sketching skills. The left half of my original sketch is the most accurate depiction of my vision (yeah, the sketch as a whole isn’t even symmetrical).