when using a licensed fabric- or one that states 'not for commercial use' it is necessary to contact the designer (or license holder) and ask permission before selling what you make with the fabric- many times the permission is given (as long as you include the designer's name-license holder and --used with permission--on your label.
it is a simple matter to ask-
and if they say no- --- well- don't use their fabric then for commercial use- save it for the gifts/personal items you make