No sooner had I finished the last post than I discovered preview art from issue 2 of the MwNN. And guess what? I have complaints! Hooray!
That's a weird pose to take, isn't it? He looks like he's sort of prancing. And his sarape looks way too long and flow-y. Its size and the way it's been rendered obfuscates any strong pose the underlying body might have.
Here I find two problems. The first is panel 3. Clint's hat looks perched on his head. Look how far away it is from his ears. Just look at his whole head in relationship to the hat. It looks silly.
The second problem is the guns. Most of their anatomy is handled well, but they frequently break down in the grip. It's most obvious in panel 4. Here's a picture of a Colt SAA:
Note how far the grip extends away from the body of the gun compared with the depiction in panel 4 above. Check out panel 3 as well: the grip appears to line up perfectly with the tip of the hammer.
Kudos to the artist (Wellington Dias?) for getting the rest of the gun right, but take a look at your reference for that grip.