Start by creating a shape as shown using pen tool.



Duplicate the layer, change the color and move to right.



Duplicate both the layer. Press Ctrl+T. Right click and select Flip Vertical and place on the other side.



Create another duplicate of these layers and place as shown below.



Create a rectangle using rectangular shape tool. Place it on the top.



Change the layer mode to "Soft Light".



Duplicate the layer, move a few pixels upwards. Change the layer mode to "Normal" and reduce the opacity to 50%.



Duplicate both the layers. Press Ctrl+T. Right click and select Flip Vertical and place on the other side.



Populate the header with links or any other information relevant to your design.