Layer Stacking Order and Specs:
A simple solid black fill.
First Star field:
White flecks placed randomly with a Curves Adjustment layer added. Blend Mode is set to screen.
Second Star field:
First layer is duplicated, flipped horizontally, and rotated to add density.
First Spiral is an ellipse with a three color gradient fill, layer effects set to Gaussian Blur and Outer Glow, with Blend Mode set to Linear Light
The second Spiral is a duplicate of the first with a Motion Blur filter applied and Blend Mode set to Normal.
The third Spiral is a scaled down duplicate of the second with Multiply Blend Mode applied and transparency set to 81%.
The fourth Spiral is a scaled down duplicate of the third with Blend Mode set to Add.
The fifth and final Spiral is a scaled down duplicate of the fourth with Motion Blur added and Blend Mode set to Subtract.
The light shaft is a simple rectangle shape with masks and Motion Blur applied. Blend Mode is set to Add.
The Pen Normal layer has a Recolor Adjustment layer and mask added with Blend Mode set to Normal.
Pen Linear Light is a duplicate of Pen Normal with Linear Light Blend Mode added.
This is the Electric Bookshelf Home page graphic.