Determine the finished size -- cut small pieces " larger than finished height of the FG unit. Cut large square 1 larger than the finished width. (finished size 2 x 4 -- cut small squares 2 and large squares 5
https://flic.kr/p/DUboLv | My quilt in Four Seasons Blog Hop with Island Batik | Fabrics: Elementz by Island Batik. Size: 36"x36".
Sewing - Handy trick from Cluck Cluck Sew - "Triangle Corner Trick". Instead of drawing pencil lines from corner to corner, place tape along the bed of your machine in line with your needle, and keep your corners in line with that instead!