I used to draw/sketch (not as nice)things like this when I had free time. Now I mostly sketch only for thing related to work (restoration architecture). So I find myself mindlessly doodling at times or drawing diagrams for things that don't need to be diagrammed...
Did you do it all freehand?
I used a compass for the drawing then changed the colors in photo editing software.
Its awesome !
I used to draw/sketch (not as nice)things like this when I had free time. Now I mostly sketch only for thing related to work (restoration architecture). So I find myself mindlessly doodling at times or drawing diagrams for things that don't need to be diagrammed...