Heh - I can trace my jawline back to one particular 2*great-grandfather (I think I've counted the generations correctly). We have a photo of him and his family of mostly daughters who all have the same chin I do - we can't tell if he does because he's wearing a ginormous beard.
It takes practice. Also, self-portraiture is rather different from portraiture, as one is both subject and recorder. However, I agree with the sentiment, which is why I did some self-portraits a few weekneds ago. I am... working up to posting some results. *G* The portrait portion is interesting: a person interested in unusual jewelery (I know the coin necklace is associated with Middle-Eastern dance as well), and caps or hats.
Compositionally, the white window/door frame diagonal opposite grabs my eye and pulls it away from the primary subjet, which in portraiture (self or otherwise) is the person. In that sense, it is distracting.