Before buttoning your shirt, INSERT PINX (Step 1), with the point facing down, between the button holes where you experience that annoying “gap.” When you insert PINX be sure to go through only the inside layer of the placket to keep PINX hidden.

Next, push PINX through a full 180 degrees until PINX FLIPS. (Step 2) PINX will point up once the flip is completed. After this step PINX can be temporarily fastened until you are ready to button up. 

Next, button your blouse, excluding the two buttons surrounding PINX.  Estimate where PINX should be placed and insert PINX (Step 3) between the buttons to SECURE.  Fasten PINX and finish buttoning the blouse.