This evening I have been trying to render a sphere and add colour. Using Idrawgirls tutorial on warm and cold colours. link at bottom.
I think my three weakest areas are
1) control of edges; sharp / blurry for focus / depth.
2) Adding colour to greyscale, this is really difficult and need more tutorials before I can really attempt to understand it.
3) Achieving visual depth / perspective using values.
To be honest I should probably just give up totally. I know I will never be as good as I want and the things I see in my head will probably never be realised, but I am here now and the only way to improve is to work my arse off from now, til... forever. So i will just see how good I can get, thanks for all your patience and help (who am I even talking to? lol)...whatever, too tired, try again tomorrow \o/