Double Six Coupe Interior Trim Fitting

Help please.
Just about to refit the interior after 10 years working on rest of car! Wondered if I fit the front and rear roof panels or the cant rail sides first headling is now fitted. Any advise on fitting trim very welcome.

Front and rear first, then the side pieces, and then the one at the bottom of the windshield if the coupe has that. Don’t forget the wires for the lamps.

Great and thanks very much for reply, have taped wires for lamps in place!