Who knows? It might be another head instead of a shoulder (possibility is always there). Honestly, I rarely check the price chart and only decide on my own when I trade, so far it's good. Just a thought, if all traders based their decision on the chart, there's a big possibility that we'll get the same pattern. However, it's not the case because people come and go, there are new traders and some leave trading which probably affect the price so it may or may not happen (the head/shoulder).
Head/shoulder pattern isn't (theoretically) a causal thing, but rather an indication of what investors are doing/thinking. The pattern is meant to be seen as an indicator. Commonly with overpriced assets (like bitcoin) the battle between buyers and sellers forms this kind of a pattern near the top.
Most people are trading bitcoin in the same way that you do - based on their own thoughts. That is why patterns like this form. They are a reflection of investor group psychology.