One of the many unfinished projects that is currently hanging out (and silently mocking me!) in my craft room is a set of decoupage tile drink coasters. I started the project but then ran into uneven sides and my doubt about how to actually finish these little guys! While I try to figure out how I'm going to get those done, I found this great video, from YouTube user 'kaboom989', that shows how to decoupage on tile to make a lovely wall-hanging. This would make a wonderful wedding gift add-on!
Here is the link for her second video: How to Decoupage on Tile - 2
And a link for the final video: How to Decoupage on Tile - 3