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!
Bibo164