Start by applying a solid black color to the background layer.
Create a rectangular strip using rectangular shape tool. use a very dark shade of gray.
Create a small rectangle using rectangular shape tool. Use a slightly lighter shade of gray. this time. Place as shown.
Using line tool create two lines. One above the rectangle and one below it.
Create a rectangle using rectangular shape tool. Place it as shown.
Select the bottom right node of the rectangle. Move it towards right to get a shape as shown.
Using line tool create a few vertical line.
Create some more lines of varying widths and different shades of gray.