The mod indicates it should be in the NET folder but gdk1904 doesn't have one.
I added it anyways but I'm not sure of it's functionality.
If you aren't immediately crashing or being constantly disconnected when messing with Shared State, you did it right. It doesn't have a NET folder by default.
I also drew some inspiration from sybergz and made a ticktactoe game with all the parts properly shared but would like to test it with someone.
You should look into using Shared Attributes instead. The issue is you aren't forwarding any of the properties to the server, and Shared Attributes do this. Otherwise, it's not actually doing any sharing.
This will be pretty cool to see working though so I hope you do. Let me know if you need anything.