Either you will select your biggest picture, or the one you prize most, and place it in the middle of the wall, and then place the others on each side of it, so as to balance one another. Or, you will feel that such an arrangement would be too stiff and formal, too obviously balanced, and will sprinkle the pictures over the wall space, so that their arrangement is irregular and looks as if it were accidental, and yet seems balanced. For, if you are trying to arrange your pictures in the way in which they seem to you to look best, consciously or unconsciously you are working to secure a balance.