Ok. After consulting my commissioner (who wanted the vines off the bow and some other details changed) this is what I came up with as what I consider to be the final image if she approves of it. I had to make the background separately (which I eventually cropped to fit my character) and it is the first background I have put so much effort in so I am feeling a bit proud of myself (proud for putting in the effort, not because it's amazing or anything).

At first I just made an outcrop for her to stand on and told me it looked a bit like the head of a bull so I decided to make it into a bull-like creature thingy. I thought it adds to the fantasy element. What do you think people?
Note: If you want to see the full size pic you can download it.