Alright, I promised Artcorgi I'd help promote them if my commission turns out great, and it did! I know there's a lot of people (not only writers) out there who really want to hire an artist, but don't know where or how. There's also often the concern of not wanting to pay in advance in case the artist just stops responding.
Which is why Artcorgi is awesome:
The payment you make is held in limbo until the artist finishes the piece, and you'll get a refund if you're not happy. Their customer service has always responded within a couple of hours and is super sweet and supportive. You'll also get to see a draft of the work before it is complete, and be able to request changes.
The prices are pretty affordable overall, many styles are under 100$.
My site banner was created by Railgunner, and she's wonderful. Even asked for feedback twice, instead of only once, which would have been the standard procedure.
Anyway, if you're interested in commissions, check out Artcorgi!