You will need:
A ceramic tile (or tiles) from the hardware store
an image you like
an X acto knife
*If your image doesn't fit on your tile, you can always crop it any way you like or use a copy machine to change the size to fit.
Next, I placed my image onto the contact paper and taped it into place.
Then, using an Xacto knife, I cut around my image pressing firmly so I would cut through both my paper and the contact paper.
Remove your image from on top of the contact paper and then carefully remove the area of the contact paper you will be filling in with paint. I used the tip of my blade to help pull up a corner of the contact paper so it could easily be peeled. Peel slowly so that if needed you can redo any cuts that didn't go all the way through without distorting your image.
I then re-cleaned the exposed areas of my tile with rubbing alcohol and dryed it before applying my paint.
Then, depending on your type of enamel paint, bake as directed to set your design permanently.
To make the coasters I used a sheet of craft foam, cut to size and glued onto the back to protect my tabletops from the rough tile back. You could, also frame these to use as wall art, simply add a hook to the back, use as a regular tile, place them into concrete pavers, etc.