step 2 / Take your center piece and dab three dots of hot glue along one of the long edges, as shown. Fold the piece in half lengthwise, and press. Starting at one of the narrow ends, start rolling your piece up. When you get to the end, place a dab of hot glue at the end to secure your roll.
step 3 / Across the seam where your roll is glued together, place a small line of hot glue along the raw (unfolded) edge of your rolled piece. Starting at this point, adhere the end of your petal piece and start wrapping it around your center piece, adding small dabs of hot glue every so often to keep things nice and secure. When you get to the end of your petal piece, secure the end with a dab of hot glue.
step 4 / Complete the above steps until you complete your desired number of flowers. Then, place a generous amount of hot glue on the back of each flower, and adhere it on top of a piece of felt. Trim away the excess felt so that none of it is visible from the front of your flower. Adhere one of your pin backs to the felt backing with hot glue.
Note: To complete my look below, I actually pinned three individual brooches in a cluster.