Three Series Options: 
1. A series of fashion photography in the style of Annie Leibovitz using back drops and different models, boosting the color and styling hair/makeup/wardrobe.
2. A series of body parts again, but this time only focusing on collar bones. Using different ages/ models to display the affect that age has on ones skin/bones.
3. A nature series, going into the city past the business into nature, boosting the color and contrast to show how bold natural colors can be. Possibly add some pictures of the city to show the contrast between city life/natural life.