How do I put mods from sledders mods into my game?

[Chill]

I dont know how to get mods from this app into sledders. Can anyone help me?

 

[Fireblasta]

This will get ya going.

 

[Neud1907]

I did exactly what the video said to do but now i broke my game and can't open it. whenever i try to open it i get error, "Failed to initialize MelonLoader: LoadLibraryExW failed". Help i cant play Sledders anymore.