I really like photos where the selective focus separates the subject so clearly from the background as you did in the last photo here, so yes, I must say: well done. I tend to go vertical whenever I take portraits, but I assume you CHOSE to take a horizontal head shot this time ... you can interpret it like "Now the whole wide world is open for her to explore", what with the graduation and all.
You give your subject a lot of headroom in your photos (more than I would have done, that is), was that intentional, too?