How to achieve this 3D "Card" effect

If you want to recreate the image using Photoshop, you could do something like the following (please excuse my very quick and poor example!).

• Create a rectangle
• Use Transform > Skew to transform the rectangle in a way that imitates the desired perspective
• Duplicate the layer and place it behind the original one, complete the corners by drawing more shapes
• Apply your portfolio image to the first shape, and draw or cut and skew the side (there is no 'automatic' way of doing this)
• Use lights and shadows to recreate the photographic effect