Anna, come and join us! This is the first time I did tiles myself, but I LOVED how they turned out! Honestly, it can go so many different ways. I'm going to have to try Scrappy's idea of using them for coasters. Although that would mean I couldn't use any 3D embellishments which may be a problem.
ATC basically means anything goes... painting, collage, mixed media, drawings, zentangles, etc. Like it says, "Show us what you've got." All I ask is that it have some dimension to it. For example, if you do a painting, that's awesome, but add some texture.
Anna, thanks for hopping on board! I'll hold off on adding you or Sassie to ATC until you two let me know for sure.