Assemble the frame pieces. EZ Frames are sold as corners and sides.
Cut the side pieces to the lengths you want using a hacksaw and saw box. The corners are spring loaded, and will insert into the sides and lock. Assemble 3 closed sides and 1 open side. This means that one side will have an open slot so you can change your signs easily.
Attach a double-sided hook into the top two corners. This hook slides into the corner and around a round nub built in to the corner. The top hook remains free.
Screw a wall anchor into the ceiling at the location of one side of the sign. Screw a screw eye into the wall anchor. Repeat for the other side of the sign. Hook the plastic hooks into the screw eyes to hang the sign.