Like Nero said the bone sructure will not change, but soft tissue can change, fat is shifted here and there, My eye lid shape changed a bit. cheeks I've got cheeks. No one thing was all that much, but gee after 18 months on hrt, I look really different from that Guy I use to know.
As a photo is worth a 1000 words I submit the following:

The girl photo was about 10 months hrt (about aug 2007), the guy photo was taken nov 2006, 2 weeks before I started hrt, My avatar is pretty current after 15 months. So it shows what is possible with hrt alone. You can see that the nose has changed some.
As with everything else, everyone is different.
Good luck
Beni