You need close ups like these.
Cloudy trichromes are easy to spot even without a mag glass I find the difficulty is telling the difference between clear and Amber without a mag glass.
You need to track once a day as trichromes can turn quick. You've probably seen info on when to harvest for a desired effect, personally I don't agree with that as I believe you shouldn't work against your strain instead it's best to harvest for maximum effect rather than a yield size or to change characteristics.
Hope that makes sense.