You can store your downloads in your account when you signup!
A man wearing a white dress up shirt sits right across from where his girlfriend, in a nice colorful sweater, sits. He takes out his phone and takes a picture of her in this HTC One mockup. He holds the HTC One in portrait mode. You can drop any 1080x1920 px image to get started, or choose a URL to display your design or app in this great HTC One mockup. What really makes this photograph is the natural smile the girl has.
Drag & drop not supported, but you can still upload via this input field: