Trendline break and H&S

FX:GBPAUD   British Pound / Australian Dollar
Found a short opportunity. There was a defined trendline and it was broken. I
Plus there was a head and shoulder pattern there. I figure it was enough for a short.
So I waited for the breakout and THEN set a sell limit on the pullback - only it didn't managed to get triggered *sad*

Maybe I should have shorted on the breakout itself. Been trying to pull a pullback trade though.