I am self employed but work for a company that does seawalls. I am the foreman and do all the work with the help of one or more of my boss' employees. Can I take a picture of the work I do for him and use it for advertising to start my own business doing the same thing. I build seawalls, stone walls, shoreline landscaping and erosion control. It's basically landscape construction. I also tried to find some stock photos to avoid conflict but there are none of the kind of work I do.