Collage of work

I have been thinking a lot about my photos as I have been doing an application for something. My computer is heavy with images taken of work in progress, finished work, work in different settings. Because of this, they look less cohesive than they would if they were taken all in one sitting, with the same background and light. I think it could be time to pay for some photography, instead of making it all up as I go along. I have been fiddling about putting images together into collages to see how they work together. What do you think?