From their flickr site:
Each member will start off their quilt's journey by making a start from which the quilt can grow -- that start can be one block, a row, several blocks, or any large pieced beginning -- and then sending it off to the next quilter in the sequence.
The next person in line then builds upon what they were sent. This can be additional blocks, a border around what was sent, an additional row, building off one or more sides of what was sent, etc., that enhances the design and infuses that quilter's creativity. Each quilter will keep in mind that the end goal is a rectangular quilt, so their addition should advance the design in that direction.
The quilt is then sent to the 3rd member in the sequence. And so it continues… until the 12th month.
In the 12th month, each member will first add their addition to the quilt they received, helping it meet the finished quilts' required size and shape.
