In our example here, we would create a divider page with a heading for Commercials, one for Print and then another for Web (or Internet). Remember, copywriting is a creative talent so don't be afraid to get creative with your own portfolio.
Dig into your old magazines and cut out various pictures from ads. Arrange these so that your divider page appears like a collage, just like the picture above shows.
This helps your sections stand out on their own and shows your creativity at the same time. It really helps your portfolio become more memorable, which is a huge plus when you're competing for a job or a client.