Start by separating the two plies of napkin using just the top layer and cut to fit into the back of the canvas.
Add a coat of Mod Podge glue to the back of the canvas and gently press your paper napkin onto it.
Next, turn your canvas over and repeat with a different napkin or decorative paper. Fold over the edges of the canvas and cut off any excess from the sides.
Take your craft knife or scissors and carefully cut slashes into the canvas in the center where you plan to place the image. Make sure not to cut all the way to the edges.
Flip the canvas over and gently fold back the edges of the slashes. Hot glue the ends to the front of the canvas. Continue until all the edges have been folded over.
Hot glue the twinkle lights to the back of the canvas along the frame.
Finally, glue the image onto the frame of the canvas and trim off any excess.