Let’s create a new document.
Fill with black.
Go to [Filter -> Noise -> Add Noise].
Please match my settings. Click the image to see it in full size.
Go to [Filter -> Blur -> Gaussian Blur].
Please match my settings.
Let’s adjust the levels.
Please match my settings.
Use the Magic Wand tool to select the black region like this.
Once the stars start to blink, open ScreenToGif to capture the canvas region.
ScreenToGif is an open-source application available at https://www.screentogif.com.
Please refer to the official Wiki link below to learn how to use the software.
https://github.com/NickeManarin/ScreenToGif/wiki
This was the result. I have created a new layer, painted some RGB colors and set the layer mode to Overlay.
This is the end of the tutorial. 🙂