fanart etiquette in ao3

just as the title says! i just recently got a fanart in twitter for one of my fics (yippie!!) but im not too sure how should i mention that in the author notes. I've heard that i shouldnt put in a twitter link so I'm not sure what the best way to go about it is. should i just link the artists' @ in the notes? at the same time im not sure if thats the best method since over time you probs gotta scroll down as they update more often for that specific post...