Looking at your though I would observe that:
1. You have chosen not to include the point (the lowest lowleft and down from your chart)
2. Some points appear to be on wick of bar and some of body of the bar
still if you are happy with it. but do remember the point of any trendlines is to understand where the market might react. That only works if your trendline is drawn the same as most others.
S&P or oil Price..?
and who told you this data will turn the euro upside down