What kind of artist are we talking about? Do you sing ? Dance? Paint? Draw? Write?
If you have these talent then you are already a artist, but to know for sure start doing. Pick up a pencil and write, write about your friends, tell your stories, take a pincer and draw anything see how it comes out, something with painting. Danceing take classes, singing join a singing group, sing in church. This will show what type of talent you have.
Me I write, paint, draw, sing, dance on my own. My talent of being a artist was not known to me until I tried each and everyone. You want to be a artist you already are just fine out what type of artist. Do start now.