Do you have Illustrator and SketchUp Pro? If so, I have a solution for you. In Illustrator, do an Image Trace. Tweak as necessary, export as DWG, Import into SketchUp. Magic. I just scribbled out “SketchUp” right now, snapped a pic with my iPhone and did that process in about 2 minutes. If you only have Photoshop, there might be a workpath to dxf script out there somewhere. It helps to add some anchor points in Illustrator before exporting to dxf, sometimes at least.