Betty Boop 69 answered:
I cut a backing piece of fabric the same size as the front. Then I sewed 2 "wings" to the sides of the backing fabric. Next I placed the backing to the front, right sides together and stitched all the way around, leaving an opening to turn the cover right side out. Press, hand stitch the opening closed and slip the journal into the "wings" and you have a cover. I'm not very clear on the wings so will try and explain better. I took 2-8" X the height of your journal, folded them in half and sewed rsvh one to the outer edges of the backing. This gives you something to slip the journal into and hold it into place. I hope you can figure this out. It's hard to explain.