Open a new file with 756×635 px and 72 dpi.

Take the shown tool and create the figure indicated next picture with the same sizes from there.

Blending Options-Drop Shadow

Blending Options-Gradient Overlay

Gradient’s parameters.

Applying the next instrument , represent a rectangle with the sizes from below.

Blending Options-Gradient Overlay

Gradient’s parameters.

Take the next tool and represent a figure like the next one, keeping the same parameters.

Blending Options-Gradient Overlay