Iv been working on both for a while now, and found the female form much harder to master due to the fact that the the forms must be in the correct scale, and definition to pull it off. Its very easy to end up with some body parts looking male, even although the anatomy of muscles are the same place. Here are a few things off the top of my head that you should keep in mind.
Head:
Keep the overal curves soft, make the jaw line higher and softer. Keep the chin small and soft. Keep the brow bone less pronounced than the males.
Keep the eye brows thinner and higher. Keep the nose smaller, softer and slightly turned up. Sign of beauty is when relaxed a woman shows her top teeth slightly, make the bottom lip nice a full, while upper lip thiner.
Torso:
Have the scapula showing, but dont add too much muscle definition. I add the back muscles, but then smooth them out just to give a hint of them. his would be true for the detoid, add the natural origin and insertion, but then smooth it out.
Have the beast rest on the rib cage, and slightly to the out side, not stright down. Give them weight, and unless you want beast inplant look, avoid creating a round curve at the tops of the breast.
Dont over do it on the abbs, its rare you see them, but rather add more fat on lower belly button area creating a nice dip. Same for ribs, just slight hint.
Be aware of the pelvis and hips, and how they play a role, there is a slight dip between them. Adding a hint of pelvic crest edge helps the from from the side. Keep the creases of the back of legs light toward the outside of each leg, this is the creases that start the form that wrap around to the under side of the knee. The inner knee bows out more. Add weight and fullness to the buttocks, and do this from all angles. The sternomastoid is more evident at the insertion point to the sternom, keep the clavical slightly curved, and add definition above it. Have the dip between the front deltoid and where the upper pecs cross over that attatches to the humerus.
Theres loads more, but im running out of time, sorry for spelling mistakes, hope this helps.