I leave about 1/4" border on two sides and the top and about 3/8" on the bottom with an overlay/window mat. I sign in the bottom right margin: (c) year/name with a silver gray gel pen on the print. The signature is visable but does not stand out/distract, and it is perminently fixed to the print. If the print needs a title I will use the same pen and title it on the bottom left.