So, first you need to create a new character.
Select a female character.
Select hair, then hair style 107 (13 vertically and 6 horizontally), then enter the hair editor and insert colour: #ffffff
Switch to the eye editor, then copy one of these values of your choice: #069d8d or #87cdd5.
Switch to the skin editor and select any of these values: #f9efea #f3dfd4 #f5e4dc #f2dbd1 #f0d6cb #edcdbf #f1d7cc or #f2dad0 (I like #f1d7cc better).
Clothing is up to you. Personally, I chose the first style, then coloured the top clothes in #ffffff and the bottom clothes in #262626.
Next, download and go to the Map Builder's Workshop.
Find the fox costume and fox ears there, put them on and you are now Shirakami Fubuki, congratulations!

So... I made a detailed guide, use it!
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2966185381

after a little testing. using the first female style of clothing and setting the bottom to black #262626 same with the hair (same style as for shirakami) and using a red color (something like #FF1C1C) for the eyes. kurokami shares the same skin color so refer to above, in character creation. using red and black dye for the fox ears (pure black dye is too light to look right) and the friendship clothing to get kurokami

Indeed Kurokami, good job! :D