Okay, maybe I am one of them lot, and though it was only a secondary wish in Skyrim, it has come true in Dawnguard, as now you have the ability to actually change your champion’s face.
Do note however, that you cannot change the race or gender of your character – no gender reassignment therapy or anything as such.
Changing Your Face:
If you really want to change your face, for whatever reasons you withhold, you will have to find an NPC called Galathil.
Galathil is a female elf, and can be found on a bench outside the Ragged Flagon in the sewers of Riften.
However, her services come with a price, which may or may not be hefty, depending on whether you’ve been a spendthrift or lack the skills to collect gold (or simply haven’t played much of the game, in which case you should totally be doing something else other than plastic surgery).
Changing your face will cost you 1,000 Gold, and will unlock the Achievement “A New You”, scoring you 20Gamerscore.
Enjoy your new face!