BCML: One click installation, or download the BNP, go into BCML, and click 'Add File': Select the BNP.
If you are updating from the original design to the crescent one, you must first:
- Uninstall the original mod
- Load up your game
- Exit, and close your game
- Install the Moon Version
- Find it again in the same place as last time
Once installed, you can find the shield inside a buried chest in the locations I mentioned and showed on the main page.