Simply upload the contents of the download to your steam/steamapps/common/skyrim/data folder.

Beware that this file includes the base nightingale cape texture (nightingalearmorcapem.dds) and its _emit and _n files. This means that if you have edited those files without renaming them it will overwrite them.

Once you've got the mod loaded, you will have to give yourself the mask via console commands.

1. Hit the "`" key to bring up the console.
2. Type this: help "Nightingale Mask".
3. The console will read something out about ARMO: Nightingale Mask and will provide a long number.
4. Type this: player.additem (# that it gave you above) 1
5. No parenthesis are necessary. For me, the number was 32000D62, because I have 32 mods installed I guess. So for example, I type player.additem 32000D62 1 and hit enter, and the mask is added to my inventory.

Post your retextures / CK item attr edits on here and I will consider adding them to the mod as we go along. I also might make a separate item that is the nightingale hood without the mask, if people request it.

Have fun!