The soffits were easy as my daughter was here to helphave thought about you fighting with that wire in your soffits a few times. The idea of having to lay that stuff out upside down makes me want to cry.

tho that had it's own trials

But the ceiling of the coop inside was a bit of a nightmare, tho I was so determined that I fingered it out.
My best advice for HC, lay it out on a hard flat surface, my garage floor worked very well.
Cut to size and bend if needed there then carry the pieces out and install them.
Gloves, gallon jugs of water for weights, and knee pads are all a must.
Hang in there...You can DO IT!!