Margin trading is basically adheres to the guidelines of "Trend Is Friend" so we do not fight the current trend if you do not want to lose, just follow the market trend direction where he is going. And do not be greedy in taking profit.
if we are really sure about the trend to go and we have much of fund, then we can go to margin trend but if we don't have much of fund, then i will not suggest this because its too risky and we can not make sure our prediction is always work so be careful when we want to make margin trading.