The idea behind
#AltText is to describe an image for visually impaired people.
Simply saying the image is a "flower," a "white flower," or a "daisy" tells the person who relies on Alt Text--to enjoy their social media experience--very little.
The idea is to create the image in their head: A color portrait of several white flowers with many pedals in a flat circular shape & bright yellow centers on long green stems. One flower is in sharp focus while the surrounding flowers are softly focused.