What are the general directions for the jelly roll race quilt. I know you sew each piece of a jelly roll end to end, but then how do you put it together,I know you sew row by row but is there a rule of thumb as to where to start on the first strip. Do you cut off a certain amount, then continue so the rows are staggered. How wide do you generally go or is it just completely up to the quilter how wide they want the the quilt to be. I know it is simple, but I'm sure it is time consuming and I don't want to blow it just because I didn't follow simple directions.