Not too bad! As usual, your smooth cel-shading adds a lot of form and volume, and looks great. I especially like the highlights on her boots.

As for the trees in the background, they're nicely proportioned. One trick I found with Manga Studio is to use the airbrush function, then select one of the droplet options below (like tone scraping, or the others). By varying the colors, I ended up with some fairly convincing foliage.