sorry another question! In the style course you talk about style matching your life style and available time. I think you say if you paint then you need to have long sessions. I am just checking why this is? I can see with oils and the mixing colour strings it might require this, but acrylics it is better to do smaller sections because the paint drys quickly (even with extenders).So, is this just a practical issue, or is it better to ‘stay with it’ for painting.