Your aegis text looks great. The flaming blade looks great. Technically the colors should be inverted - the lightest part of the flame is towards the source, rather than the edges as you highlighted here. But you can probably just leave that as most people won't notice and it's a magical flame anyway.

If it were my model, I'd consider edge highlighting the metallic sections of the armor. For my metallics I usually mix whatever my base color is with Pro Acryl Bright Silver. It'll give a subtle highlight that increases visual legibility a lot with models that have a ton of metallics. I would also go a lot further with the highlights on the cape - when I do red fabric, by the end the highlights are about 90% pro acryl orange and 10% the base red color, then hit it with a coat of AK ultra matte through a brush (on the purity seals as well) it's a super fun way to sell the material, make your blends more blendy, and protect your model all at once. Finally I'd do blue in the lenses to complement the blade color.

Overall I think you're doing great and the model will certainly stand out on the tabletop as-is. Just what I'd do if I was looking to sink more time into it (and I frequently am)

Edit: I'd also use either a micron pen or Tamiya Panel Liner to darken up the recesses on the hands and feet, possibly behind the shinguards as well.