You are no longer subject to blushing. Anytime you feel the heat rising and the color flushing, you now have control. You are in control: the blushing does not control you.
Immediately when you feel the blush start, you take a deep breath and it never materializes.
Picture yourself in a past experience when you would have blushed. Notice that you are no longer reacting in the same manner. You no longer are a victim of the blushing. You have control.