My friend Katy and I decided to tackle this project for Christmas gifts. We also decided while we were at it to use the same method on some smaller tiles to make ornaments.
-tiles (small for ornaments, 4 x 4 for coasters)
-pictures (cut to fit tiles)
-resin (and container to mix as well as something to stir)
-a straw (I'll explain later, but this is necessary)
-felt circle pads for bottoms of coasters
First we cut out our pics so that they would fit the coasters/ornament tiles.
**Very important step! Using a straw, blow across the tops of the tiles and all of the tiny bubbles just disappear. If you don't remove the bubbles before the resin dries, the bubbles will harden with the resin.
I would also suggest moving them a few times before they start to dry so that the newspaper doesn't stick too much to the backs (at least near the edges). Katy and I decided later that it would actually be cool to cover the entire back with newspaper. Next time....
After the tiles dry, add the felt footers to the coasters and they are done!
As for the ornaments, I hot glued a white ribbon so it would be able to hang from the tree, and glued the two tiles with different pictures back to back.
I even got asked where I bought the them! :)