You might find a tutorial on tumblr.

Oh... that's easy- try to be a celebrity in Hollywood
more likely than not you will have to sell out


will you be famous eternally? chances are -slim but.. that is the best way of selling what is considered a soul

Only thing you need to know: souls don't exist. And even if they did, there's nothing to sell it to.

Use your own power and work to get what you want.

I tried to once when i was really depressed, but Nothing happened :|

:( who will you be then?

What you need to do is buy your soul back from the life that it was sold to when you were born.