When I started working at Intermountain Healthcare, one of my first tasks was to create icons that went along with the training. I was given a list of what those were. I knew that most of the images that were used on the sites were three dimensional, so I started creating the icons on the right first. After looking at them closely I wanted to make them more alike, so I made some examples in rectangle and circles, along with a variation of colors to choose from. My team decided they liked the combination of rectangle and circles along with colors that represented each. Both sets were ultimately used, the right for the website and the left for CBT's.