You don't have to use a foundation. Just sew strips together, like three then sew three more together. Put 1st on top of 2nd, dew both sides and cut with a triangle ruler, sew together into blocks. This will make a regular quilt top.
I made a QAYG using backing square, W&N batting and sewed the strips to that, trimmed the top pieces to the size of the backing square. Sew the blocks together using a strip of fabric folded in half, Top Stitched to the front.
There is a tutorial on here how to make a QAYG like Ditter or something to that effect. I followed her instructions and it worked out very well.