Log into your Ayojak account and go to the Event Setup page to change the header image and logo displayed on your event page. You can select from preset header images or upload your own image that is 938x200 pixels in JPG/JPEG format. Additionally, you can replace the default logo by uploading one of your own that is 94x94 pixels in the same format. Preview the changes before completing the process, which allows you to view the updated event page in a browser with the new header image and logo.