You must take your WI Driver's license photo at your local DMV office when you go in to take your exam. When you take your photo, you should make sure that you wear what you would wear normally. It's extremely important that your face is clearly shown and recognizable. Look straight at the camera and do not smile, as a resting face is easier to identify.
When you apply for your WI Learner's Permit, you will need to bring proof of your identity, your U.S. citizenship, your residency in Wisconsin and your insurance. If you are under 18, you will also need to provide proof of your enrollment and attendance in a Driver's Education course.