Click in the color bar to open the Gradient Editor and set the color stops as shown. Click OK to close the Gradient Editor dialog box.

We’ve got the next result:

Rasterize now the layer containing the rectangle. Select the layer in Layers panel, right-click and select Rasterize Layer. Using the Free Transform (Ctrl+T) command, incline a little the rectangle and place it the same way demonstrated next picture:

Make two copies of the last made layer containing the rectangle and use Free Transform (Ctrl+T) command to change the copies’ sizes, placing them the same way from the next picture:

Insert the mask on each layer containing the rectangle by choosing Add layer mask on the bottom part of the Layers panel and choose the Soft Round brush of black color.

Paint in the mask to hide out the edges as shown:

Combine in a group all the layers (press CTRL button to select the necessary layers and hold on the left mouse’s button while dragging the selected layers on Create a new group icon from bottom part of the Layers panel).

Rasterize the new group (select the group in Layers panel and press CTRL+E to Merge Down)

Apply also on the rasterized layer the next filter: Filter > Sharpen > Unsharp Mask.

We’ve got the next result:

Click Create new fill or adjustment layer from bottom part of the Layers panel and click to Curves to adjust the curve shape as shown to make a little color corrections.

We’ve got the next result:

View full size here.

Download free Layered PSD file.