Admittedly, I am not an expert in such technical matters, but if you find a share attractive, I would invest and if not, then not. This "I think the share is good, but maybe it will fall soon so I'll wait" usually works badly, at least in my experience, either because you miss the entry completely or because it falls even further after the fall and entry anyway. So my advice would be to build a portfolio of companies where you stand behind the strategy as a whole and can then remain relaxed even in the event of setbacks. I think $SHW is a fundamentally good company.
On a daily chart basis, either at the level of the last low of around EUR 347 or at around EUR 343, which could represent a possible reversal point. Without guarantee.