Allright I'll bite
First, it looks pretty good on the pics. Hats off, as red is a tricky color to play with sometimes.
I see two things. One easy one trickier.
First, the black weapons, highlight them with a dull grey, something to help see the shape and depth from further out. It will make the barrels stand out.
You could also paint some lighting or energy on the fire prism's bent thingy that points at the crystal. That part looks all black and flat. Maybe a bit of color like lightning or gemstones painted or something to make it pop a little bit.
Second thing. One you are pretty sure you are done seal everything with a gloss varnish (Yes gloss for many reasons just trust me on this.)
Go for a pin wash or oil lining depending on how you want to call it. Pick either a dark red, very dark grey (charcoal) or black.
Fill up all the lines on your Fire Prism. This will make each armor plate stand out on it's own from afar.
One you are done with the oil wash. Re-seal in matt varnish and boom you are done.
These are just suggestions of course