how to create glow effects

And one more thing – if you are satisfied with re result – just Merge all the layers together – (as you want actually) I've merged only TAIL.

how to create glow effects

Man tire of this mouse business – let's paint create a top Payer a go!

Use soft brush with minimum Flow settings (let's say – 10% -15 %).

I've used Blur on the background of the
 
picture (it's a law of painting).

how to create glow effects

I've copied the Key layer. + I've set the opacity at about 80 -90 % - and erased some parts of it.

An there we have it – Magic some kind of trail is finished) = Crop the file for better composition.

how to create glow effects

I've used and Adjustment layer – CURVES.

how to create glow effects