Fan art is amazing - and don't let anybody tell you otherwise (and boy, will they ever try)! We can rhapsodize about our favorite things all day long (and boy, do we ever try!), but eventually we run out of ways of expressing the depth of our emotion when it comes to a series.
Along came fan art. Presumably, people are fans of something other than books, and therefore create fan art for things utterly unrelated to books - but this is a bookish blog, and a bookish community, and here all the fan art discussion is of the bookish variety. Also, not to be self-aggrandizing, but bookish fandoms lend themselves best to all forms of artistic expression, precisely because they take place entirely inside our heads. A character can look however we want them to look - and the same holds true for a place or a bizzarre scene.
Bizarre scenes might be the best. It's still up for debate. But bookish fan art is our favorite. There is no debate to be had here.
When I published my last piece and emerged from my blanket fort (wherein I hide upon publication of any piece - it's hard to declare something complete when you're an indecisive pumpkin), I got quite a lot of fan-art-specific questions, which all boiled down to the same thing. And in the interest of covering all my bases - behold! An exhaustive and exhausting fan art post to answer any and all queries, questions, musings, zen koans and limericks I've gotten on the subject.