Use an appraiser's sketch to draw a 3D space plan for your home. The background image can be any source - hand drawn on graph paper, a marketing brochure you got when you bought your home, architectural plans, whatever. Just snap a photo (or scan) from about 90 degrees, upload that image as a background image and then scale one wall. Then start drawing. See the video for detail on how to get started.
Note on Scaling - if you use an appraisers sketch, make sure your set the dimension/length of the wall on the outside edges, because appraisers measure from the outside of the home around. If you are using a marketing brochure, then the dimensions shown likely are interior room measurements.
We will have additional videos on how to outfit your home further with furnishing and decor.