When to Harvest?

Hi guys! I was wondering how much longer you think this plant needs to go for? This plant just started to grow on its own. (Sorry for bad quality picture)

It's looking good but there isn't an accurate way that your questions can be answered by anyone but yourself. Obtain a 60x ( my preference) loup magnifier preferably lighted. Do a little research on trichome development and what the colors mean. You harvest when the trichome development suites your tastes .