This idea is based on few technical indicators plus Fib trend based level which has been reached. The rounding top and dropping volumen are also signalling there is an opportunity for a short. I have shaded the area of T/P as it's our next strong resistance level and also Fib 0.5 of the recent growth.
This is just an idea not a trading advise! Long term I do think Luna will reach 130USD or even higher but now I wouldn't keep any long position if I'm a day trader