Relationship between life and death. inside, outside: No information about this but it is two different photographs put together to create a half skull, half face image. That heavily relates to the theme of inside, outside and in between.
Applied art commercial art print illustration by Norman Duenas titled "A Butterfly Effect." I really love the artists combination of nature with the human figure/skull and the depiction of a clock. It gives a great sense of the passage of time.