How can Someone Become Pretty/Attractive?

First off,don't give me that whole "beauty is only skin deep" or "personality is more important" or "outer beauty is what really counts"
because physical attraction counts and is important.
I know i'm ugly,and i guess i've learned to accept it and i don't expect to ever be gorgeous or to even get a boyfriend lol,but i would like to be somewhat pretty or at least attractive to an extent.
I just want to know,how someone can be pretty in general(don't give me that personality crap).
What are some things someone can do to become attractive?