Can you post a picture of what you have so far? That way we can give you specific pointers for things to make you look more feminine.
Two big things that are easy to experiment with are eyebrows, which you may need to trim/tweeze into a thinner, more feminine shape, and lip shape, where you will probably want to make the center of your lips seem larger by drawing slightly outside your natural lipline with a lip pencil. (It looks just like a normal pencil, but will be softer and tinted the color you need). You can then use lip stick or just color your lips with the pencil, then use a clear or slightly tinted lip gloss or oily lip balm on the middle of your lower lip and rub the edges to fade it in with the rest of the lip color.