I tried a different approach based on hot shot 10 - dividing the structure of the object in simple shapes. I found this method harder to apply than the previous one - paying attention to angles. I suppose I need way more practice, as usual. I made two pencil sketches starting with the shapes - a cylinder and a parallelipiped.
I drew these in bits and pieces because I am so slow- two minutes here, three minutes there. Then I realized I was never in exactly the same position from one micro-session to another so I kept erasing and adjusting to match what I was seeing at the moment.