Yay! Catherine Pooler Designs is moving and Catherine would rather ship goodies to you than move them, so there's a sale! Head right over for best selection!
ETA: Because this stamp is basically a square, I just eye-balled it to line it up (and if you look closely you'll see that it's not perfect! LOL!). But you could draw lines in pencil or use a MISTI to help with placement.