^-^ thanks!

^...^

well, taht's a good question XD...
i mean, i don't really think about it,hehe.
usually i start with sketching the lines, just very roughly. then, when i feel i can't do more with the lines, i start to add colors or if You want, shapes and forms. i use color as "weight" or how to say...i slowly remove the lines with painting over them.
and the other case is when i just paint big blobs and then reshape them to become...something XD
i hope You understand something of this XD
maybe i should do a tutorial...if i have more time, i'll probably do one for You! ;>