How do you flatten your flat peak?

To flatten a flat peak cap, you can start by dampening the brim slightly with water, then place it between two heavy books or flat surfaces to hold it down. Leave it in this position for several hours or overnight to help reshape the brim. Alternatively, you can use a steam treatment by holding the cap over a steam source and gently shaping the brim while it's warm. Just be careful not to overheat or damage the fabric.