trichomes on the leaves typically ripen a lot earlier than those on the buds and either way trichomes alone dont really tell you when to harvest. better take pics of the whole plant and a couple of its buds.
a fresh white/pink pistil shows a growing calyx. ripe plants will have dried pistils or no pistils on 70-95% of calyxes - I like to harvest more towards 95%.
in my opinion a little too ripe is much better than a little too early as harvest weight/potency increases faster before the perfect point than it decreases afterwards.