I have build 3 nativity sets. the hard part is the making of patterns. I look at nativities then draw and redraw on a 5' x 5' papper .
Then use a trace projector onto brown warping papper to the size I want [ dollar tree ]. Lay out pattern on table or floor. Bend 1/4" rod
[ metal supplier ] to match pattern. As Darlene Pino said bend around any thing. I have a ring roller [ HF ] and home made bender for
sharp bends [ just makes it easier].. I weld on top of pattern. This is how I build wireframes ,This is one of many ways. Ask all questions you want Iwill do my best to answer.