1. Clone the repo to where you want your plugin source code to be located
2. Open BakkesmodPluginGenerator.py in a text editor and edit these 4 lines (they're at the top) with your new mod configuration

rocket_league_folder = r"D:\SteamLibrary\steamapps\common\rocketleague"
plugin_name = "BlueprintPlugin"
python_command = "python"
alternate_bakkesmod_sdk_directory = ""

3. Save your changes
4. Execute BakkesmodPluginGenerator (in command prompt or etc)

python bakkesmodplugingenerator.py

5. Delete BakkesmodPluginGenerator.py

Don't run the generator more than once. If you change your mind about your plugin configuration, delete the whole thing and start from step 1

The bakkes_patchplugin.py file is the same as the one included in the bakkesmodsdk but I included it here so that the script won't interfere with your existing bakkesmod SDK files.