What I have done in enlarging or shrinking a quilting design (normally a plastic quilting template) is draw out the template on a picec of paper, then make a copy on my scanner, then attach no more than 6 layers of standard tracing paper to the back. With no thread or bobbin, I stitch the pattern following the lines and I have instant copies. I just pin each of the tracing copy onto the quilt and quilt the design. You carefully remove the tracing paper. No mess except for the removal of the tracing paper.