What I see in the price-action in the bullish 15minute head 'n' shoulders pattern, is that price has already made a retest of the entry zone area, in other words a retest has already occurred where price has returned to the yellow neckline which is the breakout zone for this pattern. Head to the neckline is quite deep which also means a bigger profit from this pattern alone, easily a push above the blue triangle above can be achieved very quickly.
Buy the formation of a very bullish candle from 5 minute to 1 minute tf for example a bullish pin-bar with a long-tail, which is a candle pumping-up to breakout. Don't put your SL too close because volatility can easily bounce back price for an instant 0.25 seconds, Stop you out & then gap-up back with the long momentum of this pattern setup.