Here is a free method shared by Andrew, learningforextrade.com.

I'd like to backtest it in order to know how the equity curve looks like

I've tried by myself but see the rules:

Price above SMA25 :only long
HEIKIN ASHI downward bar : Enter at the next closing heikin ashi upward bar
SL: 4pips below the red HA
TP: 2 SL and trailing stop equal to 1 SL

Hope it does make sense. If not Please see the pic from this morning

Thanks for your help !!