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 😄
Mastodon.ART — Follow friends and discover new ones. Publish anything you want & not just art of all types: links, pictures, text, video. All on a platform that is community-owned and ad-free. Moderators: @Curator @ChrisTalleras @EmergencyBattle @ScribbleAddict @Adamk678