Off the top of my head, I wouldn't have picked green and pink together - its only when you start looking around for inspiration that you realise they work very well together indeed. I must walk around with my eyes closed sometimes.
When seeking inspiration for my projects, I usually find an object, picture, photo, snippit of fabric, piece of clothing etc, and go from there. Then I raid my fabric stash and grab all the colours I am looking for, selecting and rejecting as I go along. This usually means I have lots of little piles of fabric on my desk ready for the project to begin. This is my latest fabric stash, inspired by the heart in the top pic