I love this image because it shows decay and growth. It shows decay through the crack in the wall, however, shows growth through the plant. It could imply that growth and decay aren't too far apart in there meaning and that they are both quite similar.
I am not sure what kind of material did this artist used but it looks like he or she used some kind of cellophane which creates interesting look on a painting/picture. RP by the cool iPad for showering with your tablet ;)