Thank you all so much for your kind comments. He does love his art and there are times that he paints over a 'finished' canvas on more than one occasion, but I just let him do what he feels comfortable with. Sometimes they look great, other times not so good.
It's the enjoyment and the therapy that he gains from this that is important.
I wonder if there are other hobbies that sufferers of dementia still find enjoyable, even if they feel they are not at the same standard? Does the lack of concentration mean an end to a loved past time? I suppose we just need to encourage everything that they enjoy for as long as possible.
Izzy, I hope Bill gets a lot of enjoyment from the Art classes. Anything to help stimulate his mind and add to his enjoyment. x