great tips, it'll help when im attempting backgrounds @_@ i am so not skilled at those..yet! i always lack the ability to tell when to keep goign further with details. Looking at the progressions you did i realize that I usually stop at about the third image when colouring (for example your rocks) and think to myself "well, thats a damned good rock!" and not realize i can push it further @_@. How do you know when to continue or when it's good enough?