That's very useful. Thanks very much. I'm used to using Corel Painter, but Photoshop CS5 looks as if it has some great developments, according to John Derry's PixlBlog, so I'm saving up! I've bookmarked the PixelPerfect site, and will work through the videos. Yes, I know what you mean about underpainting. The Kestrel video on TV Anytime at the moment is a terrific example of building up colour effects over each other. In Painter, I find using the layers to experiment with different colours over each other, and changing the order of the layers, to see the effect, is quite fascinating. I haven't progressed to layers with PS Elements yet, but will hopefully be there soon. Can you help me with one thing - I understand that Illustrator is vector based and PS is pixel, but I'm used to Painter that can combine both. So, for hobby digital art, I'm planning to get PS5, but should I bother with Illustrator at all?