21 Best Practices for Creating Display Ads Adhere to Google's Ad Policies. ... Upload at Least 3-5 Images. ... Be Mindful of Aspect Ratios for Images. ... Be Mindful of Aspect Ratios for Logos. ... Upload Transparent Logos, If Possible. ... Be Mindful of the Space Around Your Logo. ... Use the Right File Type for Images and Logos. More items... Sep 16, 2021