Sell by top of the channel with low boundary target

I am going to sell (I have already done it actually) in the top line of the channel. My target is the low line. Close to this line, I will close half of the order and bring the stop down. This pair is near to the lowest value, so it could be great being sold if this value would broke.

Trade closed: stop reached:

O did the trade and got stopped, I still believe the possibility going bottom of the channel. But i am out.