First idea, still relatively new as well.
GJ has been trading in a triangle formation waiting to breakout which is imminent at this point. RSI (14) is just below 50 indicating a potential move to the downside. Trend line 1 (hourly) has not been broken and with the bearish sentiment of the market and if this holds I would expect 142.5-144 to be met. Another possibility is for GJ to retrace to the daily trendline (2) and then make a move lower.
There is also a head and shoulders pattern on the hourly in favour of the bears.