You can store your downloads in your account when you signup!
Use this flat illustrated iPad mockup being held up by a girls hand to show off your app. The girl has painted her nails a bright red. She is also wearing two colorful bracelets. The iPad Mockup is being held up in portrait view. It holds an image of 1536x2048px.
Drag & drop not supported, but you can still upload via this input field: