Help with making this effect look more realistic

[denzjos]

I tried this. Create a new transparent layer. Use the "Sparks" brush (a round yellow-orange dot). Set the brush settings to your liking: aspect ratio 10, distance 100, etc.
Draw on the transparent layer. Change the color to blue using "Colors / Hue-Chroma." Filters / Distortions / Offset / Vertical. Then use "Filters / Blur / Gaussian Blur." Set the layer mode of the transparent layer to "Merge." Duplicate the transparent layer and set its layer mode to "Overlay."