As a Canon shooter you are unable to shoot multiple exposures in camera, but you can certainly combine them in Photoshop. This is what I did in order to create this image. The original photograph was of a beautiful colorful Daisy. After applying various adjustments in PS and achieving the result I had pre visualized I decided to add a textured layer to it as well. I am big on photographing a subject well in camera first hand, but also enjoy the ability of being able to create a different look and feel to some of my images.