Once you are happy with your entry, you can now submit it.
In Workbench, save your project by going to File > Save
Take a note at the file name specified.
Navigate to <Steam Install>\steamapps\common\GarrysMod\garrysmod\data\warzone\workbench
Copy the *.wzproj.txt file
Head on over to this forum section: https://warzone.gg/forum/index.php?/forum/52-sticker-graffiti-submissions/
Ensure you put the type as "Graffiti" along with the art style. Monochrome/Multi-color
Please ensure that you include both full resolution images of the standard and drip images.
Please also attach your .wzproj file, do not open the file and copy the contents, simply attach the file in the editor.