As long as it looks like fire it doesn't have to be orange lmao either way great work, it's coming along nicely! The pose is dynamic too, keep it up
Here are the final versions of that sketch I made. The coloured one was to test the green palette. Now that I made it with that one, I'm not sure I want to use it anymore. It may be that I grew accustomed to the red one. Time to move on to the final project since the deadline is coming in fast and I'm slow as hell.
The castle top pauldrons look neat. If you're using photoshop, you can slap some gradient maps on top of your layers to mess around with color. Sometimes I do this after I get some values in but it's an anytime, non destructive thing.
I am glad you went with the green fire in the end, it's not a big change but it does dramatically alter the feel in a good way, bit more unique
This is a quick sketch I made for the final work. I have mixed feelings about it. Will try some others to see if they appeal me a little more.
I'm using Krita to work and I recently found out about the gradient maps. They help a lot and I wish I had found them sooner 
This one I like a lot more than the last one. It's closer to my first idea of the character fighting on a war.
Another step in the final drawing. I get the impression that the character got a bit stubby...
One more update to my drawing. I've not worked in a few days, but since I have some free time now, I'm trying to finish it.
Sometimes it's better to have a couple days off, a break. Helps gather your thoughts together and gives you a fresh new look on it
One more Step to the final work. I'm pleased with the composition so far but the colors seem a bit weird to me. Still need to do some highlights and adjustments to the color.
I present to you Valder, the Living Flame, the undead knight whose soul is still attached to his armor, burning in search for revenge.
I think I'm done with the illustration now. I've done as best as I could and it was a very fun project. A thank you to everyone who gave their opinions 
I think the part i like the most of the design is the sectioned glowing sword
Thank you! I like the sword a lot and kinda regret that it doesn't show more, but this was the pose that was really speaking to me, so the blade suffered for it.
