Here are 2 places to look. I just googled machine embroidery, and then did an advanced search using fsl + tea lights for criteria. I am sure you can find more this way.
Jo
I found one on SewForum for you, still looking for more :) xXx
Congratulations and welcome to Cute! As justonlyme has written, you will find beautiful FSL light covers in ls-liane-stitch.de, where you can find a plain one as a freebie. Just click on the Free Designs button on the left side of the screen. They have many free, beautiful designs. Hugs, Lidia
Are you talking about the luminaries? I downloaded some from sewforum and there are also a few in ls-liane-stitch.de
They work great. I used a glass jar to wrap the embroidery around so that there was NO chance of it coming in to contact with the flame. It made a great hostess gift for a Christmas party!! Good luck.
CONGRATULATIONS, I can't help you on the FSL tea light covers.