Honestly, from that angle, I thought the shoulders looked pretty good. Even IRL the musculature twists a bit when you raise your arms like that, although perhaps not quite that much. But I'd say that what you have doesn't make the viewer think, "Huh. Yeah, typical 3D."

But I'm sure you'll find ways to improve it. :)

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Hardware: AMD Ryzen 9 3900X/MSI MAG570 Tomahawk X570/Zotac Geforce GTX 1650 Super 4GB/32GB OLOy RAM

Software: Windows 10 Professional/Poser Pro 11/Photoshop/Postworkshop 3