As Sewingpup suggested, maybe try playing around with another coordinating colour and some of your neutrals and consider a siimple pattern like a disappearing 9-patch or something if you want something a little different but not too complicated.
I also want to thank Platyhiker for such a great layout of how to figure out yardage. I had no idea of how to go about it and usually end up scrambling to make extra blocks when I discover the quilt isn't big enough. :-P