The first step is to cut all of your fabric into 4×4 squares. Obviously easier with a rotary cutter and cutting through more than one layer at a time.
So next, all you have to do is hot glue these in place randomly all over the ball. You will cover more of the ball and make a more realistic flower if you push down on the fabric’s outer edges and glue them down flat. You can see below that by gluing different parts down it opens up more. Continue until the ball is covered.