Using Border Punch with Bubble Border Insert, position punch at the center of the Sugar Sheets! strip and punch design. Move strip to right of center, aligning with your previous cut; punch design. Move strip to left of center, aligning with your original cut; punch design. On your completed strip, the tallest bubble shape should appear once at the center. Using Rotary Cutter, trim strip to a height of 1 in. from the top of the tallest bubble.