Siren of the Sea Picture

This is a painting I did two years ago as my cubism project for my painting class. I like it overall, however, I hate the mermaid's face-it's nose especially. I really like the way the background turned out though.
Please tell me what you think...
(Download for a full view)
A Siren's Swan Song
Sketching of The Siren, JW Waterhouse
Siren of the Sea
New Mates
City Siren