Why did you change it from the original version where there is a figure on top?
I think you need to look at real life animals to get the anatomy more believable, and don’t move on from the sketch stage until you have the sketch right. You’ve changed the final version a lot from the original sketch and I’m not sure if it’s because you changed your mind about what you wanted to draw or if it’s because you were just trying to cover up mistakes, but some of the changes you have made, like moving his legs around and changing his orientation have made your image worse. His right (stage) shoulder on the final version is way way too high, and even though your anatomy is cartoony in the sketch it is believable, whereas in the final version I look at him and it looks like his body hangs like a suspension bridge from his shoulders. If you look at hippos or rhinos or elephants, other heavy animals, they actually have quite narrowly set legs with inward pointing knees, and their body sits on top. Tortoises have more splayed legs, if you were going for that feel, but the body still sits on top of the legs, not hangs.
I think you need something better than a flag pole to give him a sense of scale and be careful with your background strokes. They’re all going the same direction and they’re echoed by some of the lines and strokes of his figure. When you flip the image in photoshop, it becomes a lot more obvious.
Minor minor minor issue: if that’s blood on his feet and mouth, why is there no blood on his horns and tail, which are clearly designed for battle?