It was moved to the mod forum because it is a modification question
There is no such feature as this within our program to pick some kind of featured artist.
Therefore you need to determine how you want to determine this as in what criteria and how your going to display this where before anyone might be able to assist you in the mod forum if they so desire.
You can look at queries like in the inc_features.php on how to pull photos and print a block basically to those queries you can add this to the query
ADD p.userid = 256 ( this being the users number )