Expect to realise it is not an easy job and is not at all glamour and rich clients, don't expect to make thousands a week.
Don't rely just on this, go to College get some good qualifications if you haven't already. Once you leave College get a good paying job and just do this on the side.
That way if you meet someone, have kids or just decide not to do it anymore, you have other skills and a job to pay the bills.
And as Sammy S said Save