Firstly, cover your cork board with Quilt batting, Stapling it with the staple gun (or hammering it nails) around the back.
You don't necessarily need to use a cork board. It could be a canvas, spare wood. Anything goes.
The Quilt batting will stick out at the back four corners where you have folded each side down. Just trim out the sticking-out bits with a sissors.
Next, Do the same with the fabric what you did to the Quilt Batting. Remember to pull tightly on the fabric as you staple it t othe back, you don't want any loose cloth!
Cut some ribbon to go across your board to form 'X's. Get the ribbons as parallel as you can get them. Secure each ribbon with nails/staples round the back of the board.
Stick a thumb tack where the ribbons intersect.
Srew each Hook on the in the middle of the back of the board. It should be eual on both sides so the board doesn't hang lopsided-ly.
Use some string and string it across the back of the board, attaching it to each hook. Make sure the Sting isnot' too loose or the board would not hang flat on the wall.
Hammer a nail into a wall (or find a nail already in the wall) and hook your board onto it. Adjust it so it hang's straight and flat.
Stuff your pictures/keepsakes in and VIOLA!