Ok, so I went to the life drawing and here is the result! By the time the class to came to the end, I had just got into the swing of it.
These are in the order I worked them in, and are done with watersoluble crayons:
This was my last drawing of the night, a 20 minute pose. Decided not to add the water this time and I think it was more successful. Putting the vertical lines of the radiator in made a huge difference to the composition.
I enjoyed the evening (and the trip to the pub afterwards!) but I felt frustrated with my drawings, I am so out of practice...