You'll also need to use wall anchors so that the piece is secure and, of course, a level (an uneven picture rail would defeat the whole purpose). For placement, Pflug recommends looking to other ...

If there is anything to be learned from the death of Jesse James on April 3, 1882, it is this: If you see a picture hanging crooked on a wall, and there is a bounty on your head, leave the picture ...