I have not done too much dressing yet, but through my experience in drawing, coloring and being artistic, I would say eye-liner, eye-shadow, some foundation, a feminine hair-style and female clothing to compliment that would be my ideal feminine characteristics :3
My personality reflects my self image, so that is a given lol
Let's not forget goth/emo without 'hate the world' feminine attitudes

My girlfriend recognizing me as a female makes me feel feminine too X3