In one of the sessions in HOW TO DRAW WITHOUT TALENT Danny Gregory asks us to draw a Memory Bike. I did as asked, and then I went online to find out how a bike actually is constructed. In my search I suddenly found myself on a page that besides nice photo
Draw Tip Tuesday (http://sketchbookskool.com/blog/draw-tip-tuesday-interior-continual-line/?mc_cid=bf1d393170&mc_eid=16a88c386e): my dog in a continual line