This might sound odd, but after looking through your port, I noticed that you very often have your chin down quite a bit... your jaw line is very good, and quite flattering... it accentuates the proportion of your face to your body, which is very good... you might want to consider posing with your chin slightly higher than level, such as in this shot.
If you look at the thumbnails in your port, you will see what I'm talking about.
Beauty is in the eye of the beholder, and I'm sure you have ways you like to see yourself posing, but to an innocent bystander just wandering by, the shots of your face up are more powerful... you've got a lovely face, show it off...
