Thanks for leading the way on this Guy. This darn thing is so complex!
I really do believe the wings are probably the most complicated part of the model to nail. You have to get the pistons working (I see the dome head hex screw holding down the end of that assembly in your pic, front and center), the whole thing swiveling on an armature mount point, and all those odd angles correct, with limited reference.
To me, the underskirt stuff is just stacking crap on top of one another, by comparison! LOL