Place "happy birthday" stamp onto card exactly where you want it to be stamped. Use a little pressure to place clear block on stamp and the stamp will stick to the block. Stamp on ink pad and then directly onto card. Be careful not to 'rock' the clear block when stamping or your image will be uneven or even blurred (as mine shows).
NOTICE MY BLOOPER! I laughed so hard when I saw what I had done!!