Import a jpg and use different tools and techniques to model a two-story shell and the first floor walls, for use as an interior space study. See Part 2 here: https://youtu.be/iuPD3oBW7pA
Drafting, Modeling and 3D Printing with Lydia Sloan Cline
Hand drafting for Interior Design, SketchUp, Autodesk 123D and MakerBot