Cast & Crew Images

There are way to many Cast & Crew images that are blank. Is there a way to help add these or away you can add them yourself like you do when tou upload your own cover images. I know I can do this in Movie Collector, but sense everything is moving to the web, I would really like to take care of these blank iimages. Also if possible, I think an oval shape for the cast and crew images would look better than the rectangle.