What do we have to prepare before upload in Amazon

Create these your application icon for various dimension in png format:

  1. Small icon 114 x 114px PNG (with transparency)
  2. Large icon 512 x 512px PNG (with transparency)

Promotional image (Recommended) 1024 x 500px (landscape only) PNG or JPG
Create 3 Screen shoot 800X480 or 480x800.