The first one looks better than the second in terms of colour but it feels too posed. Maybe the hand slightly further up or lying flat in front of her would have worked better. Its not a bad photo by any means though, I do like it, just not the feel of the pose.
The second is much more natural and I like it but I also agree that it is a little grey.
The second one reminds me of those hang over ads from a few years back. if anyone remembers them? the ladys sitting on her bend trapped under a wine glass and it looks very grey. much like the 2nd image.
Try and bring some colour and expression into the photo, make the beautiful even better.