this is funny ,I selfassigned 15x3 angles re-constructions and attempt to push to get many details , and, inevitabaly got myself burn out,

each reconstruction would roughly took 4-6 hrs in average, some took 2 day to get done ,,   while Im doing homework ,I'd have diffrent documentary play in the background, dive in the world of Architecture and History is quite an enjoyble jorney.

I use line tool as much as possible, and even developed my own custom shape library , action etc to help the perspective drawing process.