I like how this tutorial looks with a dark base.
Start with your base, sharpen.
Duplicate the base, and set to soft light 100%.
This makes the dark places darker, I didn't do more than one soft light layer because my base is already quite dark.
Using color #2DDAFD, create a new layer and set to 100% saturation.
Using color #2DDAFD, make a new gradient fill.
(Click on the half black, half white circle at the bottom of the layers window, and select Gradient).
Use this as a guide:
Set this layer to 100% lighten to get this:
You can leave it as is, but I thought there was too much blue so I rasterized the layer and used the eraser tool on the layer.
That is all, hope you found this helpful :]