I will not tell you what to do, but rather tell you my process for harvest.

I wait until they are ready(obviously) and then put them in complete darkness for 48-72 hours. This SHOULD increase THC content. I water them 1 day before lights out and then let them dry out some. I chop branches off 1 by 1 and pull all water leaves off before using my clippers to trim the sugar-leaves. (Keep your trim!) They I hang them in a dark closet or lay them in a cardboard box with a few holes for vent. Then, when the stem snaps instead of bending, trim your buds off and cure, burping once a day for at least 1 month. Enjoy.