I'm no expert and I'm only on my first grow (see pictures posted in other threads), but have read a lot of info and books on the subject. Do you see those clouds in the trichs, those clouds represent thc. Think of Amber as the THC dying off. The best time to harvest is when the trichs are all 100% cloudy. The amber means that they are going downhill. If you want a mind blowing buzz, harvest now. If you want a couch-lock buzz harvest when 50/50 cloudy/amber.