Included is a text plate as well as a blank plate and borderless versions of both. They are the correct width to fit in perfectly and you just need a little super glue. I suggest using ironing, but that's optional.
It's designed to be printed at 0.20mm layer height and do a color change at 0.80mm (layer 4). I'm sure the text will come out better on a 0.25mm nozzle, but I used a 0.40mm nozzle and it turned out just fine.
The author remixed this model.
The smiley face is cute, but I wanted mine to say "Everything is fine!". So I made a text plate that can be glued on the front.