Create a new layer again and use on it the earlier applied instrument, Pencil Tool (B) (brush 1 px).

 



Make several copies of the last created layer, placing them the same way indicated next image:



The majority of the copies have the same parameters of the layers, demonstrated below: Blending Options>Outer Glow



Blending Options>Color Overlay



Blending Options>Gradient Overlay



Gradient’s parameters:

 



The rest of the layers have the next indicated parameters: Blending Options>Color Overlay

 



Create a new layer and use on it this time the Brush Tool (B) (Opacity of 30%) of the color #FFF799 to introduce the illuminating effect on the text’s letters.