Hey, I'm pretty new to 3D modelling, having only started late January this year. I've just finished my second prop, a DSLR camera lens. The issue that I'm having is that when I export to Sketchfab it looks.. weird. There's a large seam down the middle and the prop looks disproportionate in places.
Here it is in Substance Painter.
Here's what it looks like in the 3D viewer when exported straight from Substance.
Here's what it looks like in the 3D viewer when exported manually to a folder and uploaded.
The second one is a bit better but it only looks okayish with that lighting setup, if I move it anywhere else the seam becomes massively visible again.
I'm not really sure what I'm doing wrong on my end, so any help would be appreciated. I'm also not entirely sure what the proper workflow is for manually uploading. I know how to export the textures to a folder but how and where am I exporting the actual model?