USDJPY catching liquidity

By building the Fibonacci OTE (optimal trade entry), I've noticed that the 4H order block is perfectly located in the range of 70.5-79% of OTE.
After that, I built two Fibonacci extensions, which confirmed that the marked order block could be the key to entering a short position.
But I would wait for confirmation on lower timeframe, like 15m break of structure to enter short.