Using masking tape, place the structure of the drawing (composition) onto the paper.
Using compressed charcoal and utilising charcoal's unique qualities draw the swimming pool.
Remove the masking tape and work into the masked areas if required.
This was very experimental. Firstly, the pool was viewed through a window which made the foreground an additional consideration and secondly the pool and its surrounds created an almost clinical setting which made the tonal values very important. Plus, we used large paper.
Not an easy task. In fact, I think I heard some huffing & puffing but... the results were brilliant!