@Rich-O-Brien no, it's not 100% SketchUp. It's a cobination of exported images over an image of paper with stains. It does use one of my sketchy line styles for the edges. The paper image could be used as a watermark but that is kind of limiting when it comes time to edit the image in the image editor.

@majid thank you. As I showed you on the other forum the hatching was done in Foto Sketcher.

@L-i-am if you wanted to make it look less photographic you could use the rendered image as a basis for a hand-shaded sort of look. Combine it with a hidden line export from SketchUp Maybe use a sketchy line style or the straight line styles. Maybe enable extensions for some of the lines

This is just a quickie shaded thing. I'm not sure it's totally right but a start.