Would you make one piece?Pie cuts. Won’t be perfect, but should be good enough.
Ah gotcha.Actually, when I say pie cuts, I’ve assumed your starting with that straight door repair section you can get, rather than starting from scratch with a bit of flat sheet:
I would make sides then add the top, got to be a real nice fit so it dont look poor when done.
Not done one before but might be wort jigging it somehow so it keeps the correct top to bottom angles when you cut/weld it.
YRM do the bottom section which is the same as the uprights, but not where it curves at the mid line.Do YRM do that section?