Transfer template to colored stock: Print and cut out the template, and tape it onto the stock. Cut a 1/8-inch-wide slit for the pocket. Cut around the outline. Using bone folder and ruler, score along dotted line; remove template. Flip card stock over. 

Fold down lapel; secure with double-sided tape. Draw "stitching" along lapel edges and on pocket with gel-ink pen. Write a message. Flip jacket over. Place double-sided tape along edges. 

Flip over again, and tape the jacket to a piece of white card stock that has been folded in half widthwise. 

Insert pocket square.