Creating my own world... Options

[redsrock]

I was trying to decide on what NON-TES story I wanted to write next, and it donned on me that I have never actually tried to create my own personal world. So that is what I am going to do, but I need your help. Right now I am clueless as to where I want to go with story. I have the map already drawn out in "Paint", but I don't have a name for the 'world', nor do I have any idea on what the plot should be, or what creatures/species I should have.

Can anyone out there help a writer out? Have any of you all tried to create your own world? If so, what are the DOs and DONTs? What caused you to succeed/fail? I don't mean to sound offensive with the 'fail' part, but obviously there's a reason if you failed, and I want to know what it was so that I don't make the same mistake.

This project is pretty high on my list of things to accomplish right now, so I want to get things right. And even if you haven't tried to create your own world, I would still love to hear your opinions.