If your strategy works, and you observe all the money management and risk/reward rules then there is no reason why anything should change on a live account.
However, it will take a lot of discipline to adhere 100% to your trading system when using real money, it's easy to click away $100 on a
demo but not so easy with real cash, the temptation is to hold onto losing trades in the hope they will come good, and an urge to grab profit as soon as it's on the screen.
Plan the trade and trade the plan, do not deviate from that and you stand a good chance of success. Stray from your plan and you are likely to lose.
Good trading!
Pete