Yup, GG right. You do need a loop to see how the trichomes look. But my zooming in on what you shown us, they look done..
Depending on what nutrients you used. If you went the organic route then no need to flush. But if you went the synthetic nutrients I'd highly suggest you soft flush for the last week and let her finish off. Don't hard flush as that's too much stress at end of life. You just want to lower that salt content in your substrate and wash out any heavy minerals. So, just water for the next week as GG said.
Now, a lot of beginners trim the whole plant then dry, please don't do this. I did it in my 1st grow.
Dry your plant whole, it'll draw out the drying process but will make it dry evenly, and as it progresses in its dry you can start to remove fan leafs and that. Feel free to DM me regarding harvesting and we can go through a few dif styles. You'd be surprised at how much the drying process makes a massive impact on the quality of your bud. There is many many ways to harvest, but the general consensus is to hang your plant whole to allow sugars and so on to be drawn back into your bud, there's a lot more to it than that.
Good luck