You can store your downloads in your account when you signup!
This is a great new iPhone 6 mockup template at a restaurant. The iPhone 6 lays on top of a closed brown check. The wooden table is elegant and you can see white place on the upper left. The iPhone 6 holds an image of 750x1334px. This is a great place for a social app or restaurant app.
Drag & drop not supported, but you can still upload via this input field: