Steam Workshop Upload-Problems

I made several Rust skins. I put a lot of effort in them, but I can’t upload anything. The workshop item in Steam is just a completeley empty page. There’s no item-name, no icon, the size of the skin is at 0.000 MB and no description gets posted. (I think know how to upload them. I checked my mehtod several times with those used by others all across the internet)
So guys, can anyone help me with this? (I’ll provide more info if needed)
Thank you!