I have a friend who is a quilter and had her sew up some eye pillows for me and I filled them with lavender and flax seed. We're both putting them on our websites after we get some pictures. Since I haven't had aromatherapy yet in school, I was wondering if the scent of the lavender buds will be enough inside the pillow or do you think I'll need to add a drop or two of lavender essential oil?