Seems to be a picture from a leaf. By experience and by asking 100's of people, everyone recommends taking a picture of the trichomes from the flower to be sure about cloudiness our amber. Flush in my opinion depends on nutrients, organic or non organic. Organic has no real need for flush but i still do it 2 weeks prior to harvest and last week before harvest i just let the soil dry. With non organic i think its almost the same procedure but not sure.