I've been slowly making these blocks with my scraps, and I thought I'd share my process! I cut notebook paper to 8" squares and use that as a foundation for my blocks. This is my preferred method of improv piecing, as the paper makes the process so much easier! Supplies: The scraps don't need to be cut into perfect squares or rectangles, but I do trim 1 raw edge of each scrap piece with a rotary cutter and ruler so that I have a nice, straight edge. It will make more sense later in the tutorial, but the raw edge to trim is the one that you will stitch your seam along. I trim mine as I go. Begin with 2 scraps. They don't have to be the exact same size. Place the scraps, right sides together, somewhere on your paper foundation. The straight raw edge of each scrap piece should be aligned as shown. Stitch 1/4" from the raw edge using a slightly shorter stitch length than usual (2.0-2.2 works well). Stitch through the scraps and the paper; the paper is acting as a foundation for the piecing. Press the pieces open. Now add another scrap. Trim 1 edge so that you have a nice straight cut, line up this scrap with your other pieces, right sides together, and sew 1/4" from the raw edge. Don't worry about all of the edges lining up; just sew 1/4" from the cut edge on the piece that you are adding and you will have nice, straight seams. Here's a close up of the stitch line. Notice that the raw edges of the first two pieces don't line up exactly with the raw edge of the piece that we just stitched down. That's fine! Press the pieces open. Continue adding scraps to fill the entire area of your foundation paper. Sometimes you may be a bit short, especially on the corners. Just add another scrap to cover the corner! Here's how I covered that corner: After I stitched this corner piece down, I trimmed away some of the solid underneath. Feel free to do that any time you have excess. Press the piece open. Continue adding scraps to your work. Press each piece open. When your entire foundation paper has been covered, it should look something like this: Here's the back side: Trim off any fabric that hangs over the edge of the paper foundation using a rotary cutter and ruler. And now you've made your first scrap block! I like to keep my paper foundations on my blocks at this point. This technique results in lots of bias edges, and the paper helps to keep the blocks nice and square. After I sew the blocks together I sit down in front of the t.v. and pick out all of the paper pieces. You can use this same process to create string blocks. Also, if you prefer straight lines over the wonky look, cut your scraps to perfect squares or rectangles before you add each piece. I love this method because the blocks sew up quickly and there are so many possibilities!