this one you have a bit more, your looking at around 2 weeks left on this, she is starting her fade and possibly by 2 weeks she will have or possibly have a blueish tint in the fade.
so you will get your lens soon and you will be able to see the trichomes good, the trichomes look like balloons, they start getting clear and as time goes by they stretch and turn to a cloudy milky look, later they turn amber, this is the prime time for harvest. most people will wait until they see 20% amber in the trichome heads. this is where the thc for the strain is at the highest and harvest right when you see that, although the plant can be ready when you see all milky heads, this is more a head high while waiting until more amber brings more a couch lock. it is all personal choice on how you like your buzz. hope this helps