This is a project with medium difficulty but is something that beginners can still try.
Stitch them diagonally, then trim off the excess, and press the seams nicely.
Repeat the same steps with the rest and set them aside.
Image Credit: Sunrise Quilt Studio via YouTube
Chain piece the rest, then cut them apart, and press the seams nicely.
How to Make a Jewel Box Quilt Block
