I was concentrating on letting the colours mix for the meadow and I totally forgot to leave gaps open for the white flowers. So I blotted some paint out with a kitchen towel right after I painted the meadow. The whites aren't as crisp and white as I wanted them to be, but it came out all right.
My meadow also ended up a bit boring since my foreground didn't extend up far enough. I fixed this by adding some droids :)