they are really beautiful and inspiring. mind to share your process?
on your question... well its easy to fool around, when everything goes. problems just arise when you need to get more concrete. my advise is to define the things you see most clearly first. this will raise your confidence and patience with the picture, and give you a better direction where to go.
"Have only 4 values, but all the edges you want."
"To any man who has slaved to acquire skill in his art, it is most irritating to have his ability referred to as a 'gift.'"