Wether they draw,act,sing,
photograph,cosplay,design, etc -
Reblog their posts. Don’t just like them.
Some people have aesthetic specific blogs and that’s okay no one is forced to reblog something but if you don’t know how to show support this is how.
No matter how many followers they or you have. Reblog their work! Show it off for them! Trust me this helps them because the more people who see the more attention they get.