The Feature Graphic is a promotional graphic that is featured at the top of your Store Listing page in the Play Store app.
This is your chance to promote your app and to attract users.
Use the following guidelines to make the most of your feature image:
✓ Use eye-catching images
✓ Promote your brand, by using images in line with your brand
x Do not use screenshots
x Do not use advertisments
x Do not add too much text to the image
✓ The aspect ratio is consistent across devices, but the actually size will vary. So use on image that will look good both in large and in small.