Thanks to all who posted info about these tiles!! I did my first one today and instead of using Sharpie markers, since I am a rubberstamper too, I used my Tsukineko Permanent Ink pads and just rubbed them over the etched images. All the ink on the tile just rubs right off!
There were a few uneven spots in the word LOVE so I decided to trace the word with glue and add glitter over the letters. I LOVE this! Have many to do now :p)