I started with an image of the model against a white background. I removed the background in Photoshop. Next I created the grid pattern by simply drawing it with a white pencil and filling it in with a low opacity of white so I could see through to her face. Then I filled the background with a gray tone instead of the white. From then on it was only a matter of dragging and dropping my overlays into place and resizing them to suit.
Below are the four overlays I used to create the background. On top is a "half-vigenette" which I combined in Hard Light mode Photoshop layer. I then duplicated that layer and inverted it vertically for a vignette on the top. I positioned and stretched them to suit.
The burst and star on the bottom left are what I used to create the bursting effect behind the model by simply changing their layer modes to Hard Light and Screen and adjusting their sizes.
Next, I added the star burst on the right to the grid in front of the model's finger.
As a final adjustment I added a curves layer and vibrancy layer to increase contrast and mute the colors.