Manual Installation: 

Drop "Ashura.dds" and "Ashura.nif" into your CharGen folder. (Steam version: Steam/steamapps/common/Skyrim/Data/SKSE/Plugins/CharGen)

Drop "Ashura.jslot" into your presets folder located in: 
(Steam version:Steam/steamapps/common/Skyrim/Data/SKSE/Plugins/CharGen/Presets)