If you go to the Collection dropdown and click -my collection-, you can add miniatures to your collection (tracked and viewable by other users) here on Bloomilk. You can even distinguish between mini and card complete sets, miniature only or card only!
Also, if you'd like to create a thread about your collection to help sell it, go to the Community dropdown and click Forums, then go to the 'Trading' section
I hope this helps! Welcome to bloomilk, and good luck selling your collection
P.S. I'm definitely interested in the collection. Though I don't know what's in it yet