Create a new file with 1600x1200 px and 72 dpi. Using the next tool
, create the first background's layer for the picture to be next.
Fill 0% on the layers.
Blending Options-Gradient Overlay
Gradient's parameters:
Select the next tool
and represent the next layer of the background.
Fill 0% on the layers.
Blending Options-Gradient Overlay
Gradient's parameters:
Blending Options-Stroke
Selecting the same instrument, used before, create one more background's layer.
Fill 0% on the layers.
Blending Options-Drop Shadow
Blending Options-Gradient Overlay
Gradient's parameters:
Blending Options-Stroke
Take the same instrument
and represent another layer of the background.
Fill 0% on the layers.
Blending Options-Drop Shadow
Blending Options-Gradient Overlay
Gradient's parameters:
Blending Options-Stroke
Using the applied instrument before, try to represent the next background's layer, that will be situated this time on the upper part of the picture.
Fill 0% on the layers.
Blending Options-Gradient Overlay
Gradient's parameters:
Blending Options-Stroke
More Tutorials: 
