Use the pip calculator to asses your risk management before placing a trade.
Take your Lot Size then put the amount of pips to your SL in the Pip Amount box. This gives you your total risk of the trade. Use this to work out your account risk %
£1000 Account value = £10 is 1% £20 2% and so on.
Remember the value wont be the same on all pairs due to currency exchange rate.