I had the make all of the polymer clay tiles and for the birdhouse which was the most time consuming part of the whole project. I covered the individual tiles with tape before adhereing them to the birdhouse. I did use some stained glass which can be seen around the bottom and along the edges of the roof.
The next step was grouting the birdhouse. Since this is a 3D mosaic, grouting was a little trickier than grouting a flat mosaic, but somehow I managed. Here it is finished: