I kinda like the slightly unsteady lines around the hair, they look almost painted :o The highlights on her hair, too. The vector's clean and the colors are good, so no complaints about that~ Good job!
However, about the steam, I'd like to suggest using something other than fractal brushes: just drag some curved lines with your brush, then blur them using Blur at about 6-10 (depending on how thick your strokes are; the thicker they are, the more blur you apply).