I think I have an answer to your question.
If you check the MFT gallery (using keyword search), you will see that the following keywords will get you into the search:
my_favorite_things
myfavoritethings
mft
mftdt (for design team members)
Notice there are not any spaces in between the words. If you were to just remove the spaces between the words, your card will show up in the MFT gallery.
When I did a search for My Favorite Things (including spaces), all the cards come up with the word MY, FAVORITE or THINGS in it. So for instance, this card came up, which did not use ANY MFT products:
KK's just a note burgundy rose bud by Kheila Kirwan at Splitcoaststampers
You'll see that she used the words favorite and things in her description.
Make sense? On the plus side I found YOUR card in that search as well. LOL
SO, if you would like your card to show up in the MFT gallery, simply delete the spaces or just use the initials MFT from now on.
If you happen to edit your upload right now, it could take several hours to "catch up", but will change eventually.