One of the good things about drawing digitally is that there are no problems with documentation which is certainly not the case with pencil and biro drawings. Anyone who has tried to photograph a large drawing will know what I mean. My main problem is usually that the background is slightly darker at the bottom and it drives me mad!. So I have spent a fair amount of time this week trying to work out how to tweak them to remedy this. Losing a little of the lightest tone still, but getting there. It has also made me realise how much screens vary - the one I use for my drawing shows a lot more of the subtle tones than my second monitor which I haven't adjusted at all.