Where are the Workshop uploading rules?

I’ve had trouble finding them-- this is the closest and I still don’t know if an addon I consider to upload is within rules. (Set of original mapicons I made for myself as I have an irrational hatred of grey-stripes. One of my friends told me they’re good enough to public.)

Thank you in advanced

  1. Nothing bigger than 500mb (you’ll get a message if it’s too big).
  2. No stolen content.
  3. Nothing illegal.

Well guess mine is pretty much okay then.