Hello, and welcome to the #fediverse!
I recommend you post an #introductions post filled with hashtags about your interest. That will help others find you, and let them know what you have in common.
There's also a project called trunk, which helps you fill your feed based on interests:
Mastodon.ART — Your friendly creative home on the Fediverse! Interact with friends and discover new ones, all on a platform that is community-owned and ad-free. Admin: @Curator. Moderators: @EmergencyBattle, @ScribbleAddict, @TapiocaPearl, @Otherbuttons, @katwylder