You need to click on "Your Houzz" in the top right-hand corner, and then click the "Edit Profile" button which appears on the right-hand side of your profile picture). Then scroll down to "Photos". You can actually select up to five photos which change as people hover over the photo in the "Find a Pro" section of the website. The first of the five photos will be the one that appears at the top of your Profile page. Hope that helps!