I just looked up the Spice Rack quilt. It's the same as the Walk About quilt pattern, exactly, but different fabrics. The quilt I mentioned in my above post is that pattern. It's entirely squares and chevron blocks, and no matter what size blocks you made it will work, as long as they all finish to the same size. The chevron blocks are made of hst's, and the 4 together will be the same size as the plain squares. You can just draw the size square you want, then mark off the hst's and measure what size you get. Add the seam allowances all around and you're good to go. You don't really have to plan anything except the finished size of the quilt. I would probably round that up or down so that my squares will be whole numbers + the half inch extra for seams. The one I did had to be adjusted in order to accomodate my fussy cut flower squares. I think they were 9". I don't remember what the pattern said, but I know I changed it. I always make my hst's a little big so I can trim them square. This is the top before it was quilted. My DH hurt his shoulder around that time and I didn't ask him to hold the finished quilt up, so the picture never got taken.