Really REALLY easy REALLY Didn't need another post... but I don't post enough so deal with it!
so you're at this point:
(1) measure your design.
(2) cut the design (make a pattern out of paper to keep the angles right)
(3) cut the same size backing fabric x1 and interfacing x2
(4) interface the design and the backing fabric
(5) pin and sew all together along the edges with zigzag stitch
bish bash bosh - job DONE!