Yes, success in demo trading shows that a trader is ready to trade on a real account. First of all, I trade on a demo account for about 1 month. I made my capital about three times bigger in a few days. Then I thought that I was ready to trade on a real account. I started to trade for real and made my account double in a week. and at the beginning of forex trading you have to take a minimum of six months trading demo there you will get all the practical knowledge about the market and if you see that you make a profit then come to the real market.