Applying thinned "glaze" to deepen the color.

Wiping back the glaze for transparency.
The deep red is Alizaron Crimson.  It is a naturally transparent color.  Here I've applied it over the cadmium red wash with a knife.  I've left a hint of the bright orange around boundaries for some extra energy.  Both colors react together for a richer color field.
Making progress.  Notice the adjusted green in the upper corners.
See more artwork from Jason Jaspersen at jjjaspersen.com, and on social networks such as Facebook, Twitter, and LinkedIn.