Could you give some pointers (again) on how to avoid distoring a drawing or a painting because of the angle you work on? I have applied your advice, and dilligently check my easel for the 45 degree angle while sitting down, and having the middle of the paper/canvas at eyelevel. Still, today, when I had finished a drawing and put it at 90 degrees the head was ‘off’. Tilting it back to 45 it was ok. So where do I go wrong??