Thank you, Happy Halloween to you, as well ^_______^

[^Is that anime?]
In one sense you came to the right place, as this blog accepts submitted VC fanart… so far I’ve posted anything submitted, but I gotta say, the amount of notes on a post are NOT the only measure of good fanart! It can be very subjective.
I admit that I am very selective about the fanart I reblog, it has to be well-drawn/rendered or funny. Both is good, too!
Like this blog, @vampire-chronicles-appreciation also reblogs VC fanart.
But to answer your question specifically, unfortunately I don’t know of any specifically VC fanart blogs where ppl are encouraged to submit their fanart.
We have many fanartists in the fandom who draw their own art, other fandom fanart, or primarily VC fanart on their own blogs and they tag the VC stuff as #vc, #vampire chronicles, #the vampire chronicles, #iwtv, #interview with the vampire, or whichever character(s) is/are in it, and people who track those tags will find those posts! So that’s one way you can do it on your own blog.
If you want to find a pile of VC fanart posts, try my #fanart tag, and #vc fandom hunters. After almost 2.5 years, there’s a ton of fanart! Some of it’s from outside Tumblrland, some fanart is other vampire media, some blogs may be inactive by now, but at least I’ve got a good chunk of VC fanart saved for ya ;D