Big Huge Labs gives you a couple of options when it comes to uploading your photo.
You can choose to do so from your computer, Instagram, Facebook, or from your Flickr photostream.
Moreover, with this tool, you can select your magazine layout, title, tagline, publication date, and more.
To top it off, you can even use this to create a postcard.
Instead of just having a generic magazine cover featuring your image, this service lets you incorporate the magazine into photos of real life settings.