lewismcgeary
commented
9 years ago Tips
Don't include any copy or important visual information near the borders of the asset – specifically near the bottom third of the frame. Try to centre align any logo/copy information in the vertical and horizontal centre of the frame. If adding text, use large font sizes. Your graphic may be displayed alone without the app icon.
https://support.google.com/googleplay/android-developer/answer/1078870?hl=en-GB
http://android-developers.blogspot.co.uk/2011/10/android-market-featured-image.html