I think what you should do if you want to create a character is to find a artist who would draw something for you base of description and for what you want to come together.
I think the base way to desecribe something to someone is to use visual refs and also descriptions if something you want isn't exactly what's in the picture. Like for a example, you may want a character with dual hair, pink and white but you may want the hair to fade into white to the tips than just dyed white hair tips.