lizzie3, that is a lovely combination of fabrics! I think they will make a beautiful quilt.
Carol, very pretty fabrics! I think you have enough contrast between your greens and yellows. I agree that a photo of the yellows and neutrals together would make it easier to see if there is sufficient contrast between them, as well. I think there is. I would take out the third lavender from the bottom and try it with the purples to see if it fits better there. I'm using some very pale lavenders myself, as Bonnie didn't mention contrast between the lavender and the neutral as something crucial.