Here are a couple of links to preprinted wholecloth quilts
http://www.christianlanequilters.com...age/589354.htm
http://quiltingstencils.com/preprintedwholecloth.aspx
If you want to do your own, I would recommend buying wide fabric so you have no seams. You can use wide muslin or any solid wide quilt back fabric. Then you can mark it using stencils or make up your own design.