Then paint out this layer: Layer ? Duplicate Layer (ctrl+j) and select Edit ? Free Transform (ctrl+t) option to turn it around and change the size of this set of circles:

Fantastic Sunset Wallpapers

Combine the background's and the sky's layers (ctrl+e) and apply to the new layer a special filter: Filter ? Render ? Lens Flare, setting the flare in a way to be situated under the circles.

Fantastic Sunset Wallpapers

Fantastic Sunset Wallpapers

Next we'll create a brush of our own, having the star's shape. For the beginning we have to open a new file (400x400 px). Draw
  
a star on it, selecting the Custom Shape Tool of black color:

Fantastic Sunset Wallpapers

Apply the next command: Edit ? Define Brush Preset and change the adjustments of the brush in the Brushes window.

Fantastic Sunset Wallpapers

Then create a new layer, under the land's layer. Change its Blending Mode on Overlay and insert the stars on it.

Fantastic Sunset Wallpapers

On the layer above, we have to create several rays painted in white color (Paint Bucket Tool).

Fantastic Sunset Wallpapers