Here is a tutorial series on modeling complete house in Revit Architecture 2019, This is actually a basic Revit tutorial series but you will learn something advanced about modeling roofs in Revit(I guess). In part three of this series, I shared with you how to model sheets on roofs in Revit.
WATCH TUTORIAL ON YOUTUBE
DOWNLOAD DWG FILE (IMPERIAL)
DOWNLOAD DWG FILE (METRIC)