Aesthetics in simple terms means beauty. In Japanese Aesthetics, imperfection is beauty and perfection for them is dead. They really have a big difference of what they consider to be beautiful compared to the Westerns. Japanese Aesthetics is about embracing your flaws and being simple because it makes you beautiful.
In the photo above, I chose the sakura (cherry blossoms) because it symbolizes perishability which is one of the Japanese Aesthetics. Sakura are more beautiful because they don’t last forever. It is called “Mono no Aware” which means the transience of things.