I offer poster prints on 13x19" paper. The image is 10x10" or 10x15", depending on orientation. This leaves room for matting and framing.
Or, if you want something small and ready to hang, you might like a mini-print! 5x5" or 4x6" prints mounted on wood.
My canvas prints are reproductions printed in my studio with an Epson Stylus Pro 9900 printer. The gallery wrap edges make them ready to hang without framing.