Having a positive demo account is not enough to justify a move to real account trading. It all depends on the way. If you have just gone through a few trades and your trading account is positive, you are not ready for the real one. To switch to real trading, you must be able to generate steady profits over a long period (at least several weeks). This does not mean that your demo account should only go up, but you must have an upward performance curve at the end of your test period.