Thanks! I thought the outline was necessary, even with the simple background. If I were to do it again, I would like to try an isometric perspective for the background, but it may be hard to draw an upside down character this way…
I think it'd work fine as an isometric piece - worst case it might just look like the vampire is hanging off right on the edge rather than in the middle of the ceiling. But I don't think that would even be noticed by anyone seeing the composition for the first time :)