I urge all of you that are serious about mosaic art to join CMA (Contemporary Mosaic Art), here is the link.
Sign up for acceptance, they do screen, as it is not a social network site, rather a site for mosaic artists. When prompted to, send photos etc. and you will be accepted. It takes a few days.
You cannot sell unless you are a paying advertiser.
It is a great site for learning and inspiration.