Originally, I was only going to outline the spools with stitch-in-the-ditch quilting and leave it at that since this is such a small quilt. (15 x 17") After I did, I decided to try and make the spools stand out a little bit more and so I added the diagonal quilting on the white background.
Here are the "tools" I used to do the diagonal stitches:
A roll of 1/4" marking tape, and my sewing machine's edge guide
Using a long ruler as a guide, I put a piece of tape every three inches. I sewed right up against the tape to get the first quilting lines.
To fill in the quilting with more closely spaced stitches, I used the edge guide attachment on my sewing machine. I adjusted it to be 1 and 1/2 inches from the needle.
By following the previous stitching with the edge guide, I was able to make another straight line of quilting stitches without having to mark a line. It did the trick for me. (Seems that I will do anything to avoid learning to do freemotion quilting.)
This little gem of a project was so much fun, and will be hung by my sewing machine. I'm going to try doing the Mini Swoon next.