Uploading your mod to the Steam Workshop.

Electronic Arts have released a tool to allow modders to upload their custom mods to the Steam Workshop.

This tool can be downloaded directly from here: https://www.ea.com/games/command-and-conquer/command-and-conquer-remastered/modding-faq?isLocalized=true#q6

Below are a copy of the instructions packaged with this tool.

1 - Launch uploader.exe
2 - Enter an Item name above the "Create Item" button.  
3 - Press the Create Item button.
4 - If successful quit the uploader. (Important as uploader will overwrite the json file on exit)
5 - Find the newly created Item folder (in the WorkshopContent folder) and fill it with your mod content.
6 - Edit the item.workshop.json file and fill in the appropriate settings.
Note: Make sure to tag your item appropriately(ie: RA for mods that only work on RA) so they show up in
the right game.
7 - Launch uploader.exe again.
8 - Pick your item.  Verify that the preview image is working and the content folder is correct.
9 - Update the Visibility and Change note as desired.
10 - Press the Submit button.
11 - Verify that Status says "SUCCESS! Item submitted!"

NOTE: If this is your first submission to this workshop you'll need to login to the workshop on a web browser and agree
to the "Terms and Conditions" of the steam workshop license agreement.  Once agreed you can try to press
the Submit button again and hope it works.