The simple fact that you've used '"if I possess'" instead of "if I've got", is a giant clue to me.
I agree with jtyler, that you should "just try it out and see how it goes". But, I disagree with his point that "It doesn't even need to be professional quality.
It certainly does, if you expect to earn real money - I assume you're talking about freelance writing as a career. That's the kicker.
These days, when anyone with a computer and an ego can be an 'online writer', just by saying so, (in their deams...) the whole field has become sullied and debased. Nevertheless, for good, ie; professional standard, writers, opportunities abound.
NOT wishing to promote myself, or sound like a smartass, but I've written a number of Hubs on the topic, that may be of interest, perhaps even of value, to you.
If you click on my profile, you can decide for yourself. :)
Good luck with your dream.