The key to a feminine style is in the cut.
If your cut is crap, you won't get anywhere.
Never go against your hair texture for your usual style
or you'll slowly destroy your hair with heat.
You can sometimes curl them if they don't curl, but don't do it every day.
Also depends on face shape. If you've got a strong jaw, you hair should not finish there.
Long Layers and razoring along the face can soften and feminize your face.
If your hair has a bit of texture (not totally flat), some curly mouse can accentuate
those slight curves and create a wave which is very sexy, especially along the face. To
accentuate it even more, buy a diffuser (but only if your hair does have this slight texture,
if not, its useless). This with the curling mouse or gel, with create more defined waves or slighgt
long curls depending on your hair texture.