Graduating from PaperMoney tomorrow I´ve been practicing trading calls, puts, covered calls, cash secured puts and calls/puts verticals using PaperMoney. I´ve lost and won, but always learned. Tomorrow I am going big and make my debut trading with real money in TD Ameritrade. 

Is there something different between PaperMoney and trading with real money that I should be aware of? What other differences I shall consider? Any tips for "beginners"?