There are a lot of things to fix still, and while I render the things that still need rendering, I focus more and more on making the character and the background seem like they actually belong in the same image. In other words: added focus on lighting and shading.
With regards to the outfit change: when exploring colour schemes in the thumbnails, I liked the red against the purpleish shades in the fifth one, and originally wanted to incorporate that in some way. I tried to bring that back when I found that I the green-on-green outfit didn't provide enough colour variation, making the image seem too flat to me (especially when paired with a relatively warm skintone). Also, the shape of the green top didn't work for me, so I experimented with long sleeves (while once again looking back to the thumbnail sketches).

