I used this tutorial from Elsie Larson.
I really wanted to do this with a wedding picture of ours. It seemed antique enough to match up with this technique. So, first you print a picture onto photo paper. I think you need an inkjet printer. Not totally sure on that, but I have one, so that is cool. I printed this one, which is one I love, but got overexposed in the corner, so I can't use it very much.
I printed this on 8.5" x 11" photo paper, then trimmed it to 8" x 10" I bought a simple, cheap canvas at Michael's. I think it cost me $5.99.
I used this Utrecht acrylic--matte gel. I had bought some a long time ago, and really have never used it. You cover the canvas in this. Make it a rather thick coat. then press the picture into it, lining it up. Now, remember that your image will be reversed. There is a feature on many basic photo programs that allows you to mirror flip your image. I think you can do this in MS Paint. So, if you want to do it the proper way, you can. I didn't care.
You allow this to dry to several hours. I did overnight. Then you get a spray bottle of water, and spray the back. Now, I have done a similar technique for art journaling to make stickers. (Hey, should I do a sticker tutorial? Does everyone know how to make stickers?) I am just warning you that this part is very time consuming, messy, and tedious. But I like the results. This is what it looks like when you first start rubbing and start seeing your image.
Now, remember that the rubbing is a kind of rough process, and yet, you don't want to rub too hard, because you will rub off your picture. So, find a kind of middle road of rubbing. (Oh, geez, like you know what that is.) You'll see what I mean. Unlike me, start at a corner that can bear to be rubbed to the canvas. Once you see the picture without a film, stop and move to another area. I rubbed some parts of my photo off, but it actually makes it look very antiqued.
And the finished product:
Which looks exactly like the one on the desk. Awesome. I forgot to mention that you should put a layer of gel medium on top of the picture after you are done rubbing to protect. That is all.