This is truly a momentous occasion for me and my crafting: I have just completed not only my first Waldorf-style doll, but also my first complex set of patterns (because in truth, the doll and her clothes are multiple patterns, not just one giant one - thankfully!)
I find that my pattern-generation is pretty much all trial-and-error. I start out with an idea of what I think I want the end result to look like, and then I just jump ahead and start. Which means that for each article of clothing (I am not even going to talk about the doll Herself!) I probably started and restarted at least 4 or 5 times, if not more.
I even completely changed the original colours I was going to use, there was a beautiful goldenrod yellow I wanted, but in the end it just looked too bright and garish against the rest of the darker tones. So I think I'll save that colour for when I make her "summer" outfit (because yes, she is going to have a different outfit for each season - it's easier than making four different dolls! And that's not too bad, I was originally thinking of making one outfit for each Sabbat, which would have been a total of eight!), and made her shawl out of that beautiful garnet heather.