Ah, right, I forget about copyright issues. Still, you might could sell it at cons and things, right? People sell their fanart sometimes at them so long as they don't claim the characters as their own.
I just found this comic and I'm loving it! I'm so thrilled to find out more... and most of all how Sherlock and John meet 10nant and Rose. Can't wait for it to continue. You're doing a really good job and the drawings are fantastic!