My very first quilt was cordouroy. I made a block with diamonds in a square (I thought it was called friendship square, but I can't find it by that name) - but I would recommend something more like what is shown earlier in this thread - nice straight seams, square (or rectangle) blocks. The quilt is lovely - but HEAVY. Be warned.
http://4.bp.blogspot.com/-zlebYLQpf_...onds_quilt.JPG