DJSHenninger
Megas Basileus
...How about this? I don't think it's the effect you meant but it certainly adds to the spookiness - after making the starburst and coloring the background, I airbrushed a greenish mist behind the skeleton...
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Indeed, it's different, but it doesn't always have to be shiny, of course. Maybe you could dodge/midtones the mist a bit too in random places, it would look more 'misty'

One last thing is that it might be better to have the starburst coming from the other side, if you look at the skeleton's shading (or flip the skeleton).