I've draped my quilts over fences, have asked family members to hold them up, and hung them from the gutter with skirt or pant hangers. You will have the best lighting if you pick a bright cloudy day - not dark cloudy, and not full sun. Cloudy but bright will give you the best lighting without a bluish tint, and you won't have burnout or shadows caused by full sun.
Here is a link to a GREAT site that will help you create the best setup and take the best pictures, especially if you want to shoot indoors. She uses layman's terms and her recommendations for lighting, etc. are affordable.
http://www.hollyknott.com/stq/index.htm