From Sogetsu Textbook 5, this arrangement is on the theme of yuka agari (床上がり) Floor Position Arrangement. The arrangement originates from the floor and is created while being conscious that it will be viewed from a standing eye-level.
The painting on the wall is a replica of "The Willow" by Sengai Gibon (1750-1837), a Zen monk.
I hope you like it. --Miyako