I figure with the center owner sending extra fabric is fine, as that is never going to be more than the finished top, and it will get used up along the way. But I totally agree with the round participants not sending on additional extra fabric unless they mean it as a gift to the next person in line, to use or keep as they want.
I got carriem's center yesterday and have it pressed and hanging on my design wall so I can start thinking about it.
Carrie - since your center is not square, what size are you hoping to end up with? I've got one potential idea but it would turn everything more square so I don't want to do that if you are looking for a rectangular quilt at the end. Saw the note about adding rows (round 5) but didn't know if you meant to turn it more square or if you were hoping for an even longer quilt.