When your Money Management Rules is varying from a trade to another it becomes more difficult to keep following these rules and to have a well evaluated money management principles .. 

I am not saying that you must have a fixed amount of risk as an unbreakable rule for trading but, i don't recommend that for beginners and strongly advise to follow a fixed risk for each trade as a beginner trader .. 

In the following video we are discussing the idea of Fixed Fractional Money Management and how it will affect your result and equity curve after a number of trades ..