Do you have an example? Objects (especially ones that can be broken down into primitive shapes) have perspective/vanishing points too. Else you have to eyeball. I think when translating 2D designs into 3D, one should focus on capturing the "essence", so the 3D model stands on its own and doesn't fall apart from certain…
Thanks for sharing! I think it might help to study welding a bit more, good welds vs. bad welds. Unless you're intentionally trying to emulate a certain look? What's your welding reference? It looks a bit to blobby to me, so I did a quick web search of "good weld bad weld" and found some examples that might help: