This video shows several approaches for creating a curved, sloped wall in Revit and also more tips on irregular walls geometry.
visit for more tips: https://www.revitexperiments.com/
Discount for Adaptive Components Course (Curved Quad Panels on Curved Surface):
Discount for the Dynamo from zero to Hero course:
Discount for the Paneling pt1 Course(Curtail Walls, Curtain Systems, Sloped Glazing):