I decided not to rework this assignment too much, as I was happy with the overall result and the feedback I had received. I did edit the fingers so the composite image looked a bit better. My tutor raised a point about why I did not keep the main part of the image, the party girl, in colour and the reflection in black and white.
The main reason was because the part with the depressed part was quite small and even in colour it looked black and white due to the surrounding colours. Overall I preferred the lot of the whole image in black and white, I found it joined together better and looked more pleasing to the eye.
Here are the final images.