Box designs (like Ebooks or Software box) images are very popular on internet these days. Its quite an easy and interesting task to create an ebook or software box graphic in photoshop. Create two nice photoshop files using text, images and effects. One will be for front side of the box and other for the side. Make side graphic almost one third in width of the front graphic. Here we assume your front and side images are ready to wrap on a box.

Drag both images in one file.

Select the front graphic layer and press Ctrl+T to get transform handles.

Right Click on the graphic and select perspective.

Drag the right side handles inwards to create perspective look.

Similarly select side layer and press Ctrl+T to get transform handles. Right click and select perspective.

Drag its left side handles inwards to complete the box shape.