This is looking good but a bit stiff. Look at the basic concepts of animation (counter poses, lines of action, anticipation) + use the highly scientific method of enacting the pose yourself to achieve higher-energy and natural gestures.
Here's a liquify overpaint highlighting some changes to make the pose more active if you don't mind. Besides those, work on the arm muscles and the grip because those are major components of this pose. How you work their tension and placement will define whether he's in the midst of an attack or just using a stick to draw something on the ground.
Reenacting the pose for reference is just a matter of grabbing a large mirror, a broom and murdering the ground in front of you a couple of times. Though you may not be four-legged even what can't be directly copied can be extrapolated. Move around and pay attention to how you grip the shaft, where you point your elbows, the way you plant your feet for stability. What's the rotation of your pelvis in relation to the shoulders? Are you squishing or relaxing them when attacking? Are you curving your spine? Bowing or raising your head? Repeating the action and moving around will ensure you fall back into a more natural pose.
Once you have a base gesture you can exaggerate it for effect: Move limbs further apart/squish them closer, twist the spine, rotate shoulders/pelvis. Try things out to find out what looks more dynamic and emotional.
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Here's a liquify overpaint highlighting some changes to make the pose more active if you don't mind. Besides those, work on the arm muscles and the grip because those are major components of this pose. How you work their tension and placement will define whether he's in the midst of an attack or just using a stick to draw something on the ground.
Reenacting the pose for reference is just a matter of grabbing a large mirror, a broom and murdering the ground in front of you a couple of times. Though you may not be four-legged even what can't be directly copied can be extrapolated. Move around and pay attention to how you grip the shaft, where you point your elbows, the way you plant your feet for stability. What's the rotation of your pelvis in relation to the shoulders? Are you squishing or relaxing them when attacking? Are you curving your spine? Bowing or raising your head? Repeating the action and moving around will ensure you fall back into a more natural pose.
Once you have a base gesture you can exaggerate it for effect: Move limbs further apart/squish them closer, twist the spine, rotate shoulders/pelvis. Try things out to find out what looks more dynamic and emotional.