If you have a fresh new install of DS3, make sure to make one vanilla (Base Game), save the file to avoid errors before installing the Mod. This guide will find you a method to install the Cinders Mod in Dark Souls 3.
Step 1:
The first thing you will need to do is open up the following link.
https://www.nexusmods.com/darksouls3/mods/310
Step 2:
Go to files and download both main and model files.
Step 3:
Once done, you have to unzip the files into each folder using Winrar/7Zip.
Step 4:
After that, copy the contents of the two folders to your dark soul S3 Game Directory.
–/steamapps/common/darksoulsIII/Game/.
Step 5:
After all that, you are done, and now it will automatically open cinders mod instead of vanilla DS3.