Play with the level of detail when using this effect. Creating more elements will lead to more realism. Adding more variations (e.g. a gradual change of colour, more elaborate swirls and refined blurs, the closer you get to the real thing.
I made two quick variations of the first scene. Instead of just altering the colour of a ‘light effect’ group I gave it a gradient. Select both the upper and lower element when putting on the gradient. Seeing the layer is set to ‘Glow’, keep the shades light. It created some nice results.