I don’t see any mention of getting better - just what shortcuts. Ok – I use whatever is most expedient. No one but me is going to see the sketches that I use to work through the problem so underlays, grids, pencil, pen, I like to sketch on yellow tracing paper as I can use one sketch as an underlay for another as a method of iterating. I self-edit very quickly and discard quickly. I have never been married to a sketch or sketching – it’s just another tool in problem-solving.