Remove the top and bottom of the can. Scissor open the side of the cylindrical tube that remains.
Pin the sheet to the wall with two pushpins or two tacks. Fold the ends to grip the photograph as desired. Adjust the position of the pushpins as necessary to obtain the aesthetic effect you're wanting. Likewise, you may want to shorten the sheet by scissoring-off the excess bits or by folding the grippers back over themselves.
It could take two or more tries to get this right.