Rather than focus on trichomes only, look for the other signs of ripeness-here is a good thread about when to harvest and what to look for in a ripe plant. https://forum.grasscity.com/threads/a-guide-on-when-to-harvest.666373/ If you only go by trichomes, most likely you will harvest weeks too early. Like Holla said, whole plant pictures will give us the info we need to better answer your question.