I will once in a while lighten my colors to reach that glow effect.

abstract painting tutorial



abstract painting tutorial

Create a new layer select this king of brush and tap just ones; the rest will be done by layer styles.

abstract painting tutorial



abstract painting tutorial

And here are my layer settings.

The Inner shadow options are quite standard.

 
abstract painting tutorial

The inner and outer Glow settings are quite the same with red as the dominant color.

abstract painting tutorial



abstract painting tutorial

Color overlay is standard.

abstract painting tutorial



abstract painting tutorial