I want to know the statues of the hair before applying the perm i need help?

i want the help in doing hair perm ok?hi ireallywanna know the statues of the hair in applying the hair perm should i leave it curly bec. my hair is coarse and very curl;y and i want to apply itto flat ironed hair bec. i can't contrl it plz help i need to know the statues of the hair urgently