I really wanted to make Grievous scary, like he was in the original Tartakovsky series. And I found the less of him I showed, the more menacing he looked. So I kept trimming down his details, making him essentially a black mass and not even showing where his hands gripped the lightsabers, but rather keep it a series of inhuman shapes.
(this left me speechless)
Grievous looks so cool
The scene is ripe with detail on the left, but eerily empty on the right. Kind of summarizes the horrors of war in one, neat package.
Then, of course, there's Grievous and the Clone. You rarely get a feeling for what the Clones are thinking since they're borderline mechanical and always wearing helmets, but you can really get a sense of pain on this Clone here; and the closest thing to fear guys like him can experience. You were right on the money with Grievous here. He was scary at first simply because he was so powerful and fast and merciless but here, you made him scary just by standing still. He looks like a walking nightmare here; something so out-of-place for Star Wars and I love it!
Also love the sliced-and-diced Clones in the background. I'd like to imagine the Clone reaching for the thermal detonator is only half the man he used to be.
This image grabs your attention, and it's definitely the best Grievous rendition I've seen. I've never been a fan of that particular character, but this image makes him more interesting. I agree that showing less of him adds to his menace. One particular detail I like is how you presented the general's lightsabers. The weapons seems to be an integral part of his structure.
The causalities you spread around the scene are good, but I especially like how you have the thermal detonator's ruby lights reflecting off the trooper's hand and helmet. You get the feeling that light is going to be the last thing the clone sees.