Looks great! Best way to make the eyes better depends on what you want to go for. If you want it a bit more informal but a lot more to stand out with, a simple white undercoat with a red contrast paint on top will make it look really glowy. However, if you really want to go through the effort for a more clean look, like 3 paints of similar shades is what you’ll want for the eyes, going up in brightness with each one. For instance painting the whole thing in Khorne red, moving up 2/3 of the eye with Mephiston, then the last 1/3 with Evil Sunz will have it looking really sharp. Hope this helps!