Mastodon.Art is closed to signups by default to keep bots out, but you are perfectly capable of inviting friends to join.
Don't see some of your friends here? Not enough of a certain kind of artist here? Invite them!
In your settings you can generate an invite link and share it: https://mastodon.art/invites 😄
We also welcome people from other instances who want to join Mastodon.Art. If you are interested in joining but don't know someone here, DM me and I can give you an invite link.