In the upper left corner to the right of your profile name of your Doc&Do screen, select the Down Arrow (#1) and then select Account Settings (#2) .
Next, Change your image to a picture of you by selecting "Change Image" (#1). A dialogue box appears where you can select an image from your computer. We recommend this is picture of you as this is how others will see you in the system, and it is much more effective when people are trying to add you to content.
Scroll to the bottom of the page and select "Save". Then close out of the Account Setting dialogue box by selecting the "x" in the upper right of the box.