ok. let's make those melon templates. you actually need to print two melon pattern pieces. here's where that manila folder comes in. tape, glue, or gluestick the pattern pieces to the folder. cut one out along the outer edge. cut the other out along the stitching line.
draw horizontal and vertical lines on the smaller one to use later as reference points.
trace around the larger one to make your melons from the background fabric.
lay the smaller one in the center of the fabric piece, trace around it for the stitching line, and mark the reference points.
you need four of these