Another one! Your art style is absolutely fantastic and Flaahgra is an AWESOME subject to capture! I love the smooth line work here, and the coloring and shading is on point as always. The only thing that I could say, that wouldn't really detract from my score, is that over-all this piece feels a bit "cramped." The area you fight him in is pretty cool too, and I can see that you captured it pretty well in what we can see of the background. I think I'd just want to see a tiny bit more of that- namely left, right, and towards the top. I feel like a bit more background may pay more respect to Flaahgra's size.
However, as I said, it doesn't really detract from my score at all. Keep it up! :D