I use the template material that "eparys" posted a link to - I line up the grid with the straight of grain of the template, and after I've cut the shape, I tape the template paper to the underside - this means the original markings are visible through the template. If needed, I use medical tape on the backside of the paper template. I use my rotary cutter to cut along the lines if it's a straight line type of template. So far, I haven't had to use a template for anything curved.