And you can also purchase a real window unit and attach it to the wall. Again, you can put a poster behind it, and with the real window, you can open the curtains. If you'll be opening the curtains, the important thing is the realistic-looking poster. To attach the poster, glue, staple or tack it to the part of the window which will face the wall. Affix it to the frame of the window and the scene won't look like it's pressed up against the glass. This is the best way, since trying to fit pieces of the poster into each pane will give a chopped look to your scenery and be more difficult to do. The curtains can be pulled back or left down if using a poster. You can also opt for a more simplistic look by simply placing a valance over the top of the window, then placing plants around the window.
Posters play a very important role in the process of making fake window. Therefore you should choose posters carefully.

