A poster of any size can be decoupaged to a canvas, eliminating framing and a push pin wall attachment. The decoupage treatment will transform an inexpensive poster into an attractive work of wall art, suitable for any room in the home. The technique is uncomplicated, with materials found at artist supply stores. Decoupaged art deco posters will add sophistication to any wall. Teenagers wishing to turn their favorite posters into art can master the process for their bedrooms or for gifts.
Measure the height and width of the poster with a tape measure. Add 2 inches to each measurement for a 1-inch canvas border. Use these measurements for the purchase of artist canvas stretchers, which are available in a wide variety of sizes, and artist canvas.
Fit the canvas stretchers together to create a rectangular frame for the canvas. Cut the canvas to fit the stretcher frame, allowing room to wrap the canvas around the edges of the frame.
Place the canvas on a large flat surface such as a table or the floor. Position the stretcher frame over it, centered. Wrap the canvas over the center point of the top edge of the frame and attach it in place with one staple, using a staple gun. Stretch the canvas to the bottom center frame edge, pull it taut, and staple it in place.
Attach the canvas to the stretcher frame center sides with one staple each. Continue to staple the canvas to the frame, adding staples every inch and moving from opposite edge to edge and from the centers to the corners. Fold the canvas at the frame corners and staple in place.
Cover the front of the stretched canvas with decoupage medium, using a foam paintbrush. Center the poster and press it to the canvas with your hands, smoothing the poster paper from the center outward toward the poster edges. Let the decoupage medium dry for 20 minutes.
Cover the poster and canvas edge with another layer of decoupage medium, using a foam paintbrush. Let it dry for 20 minutes. Repeat twice more.