You don't
have to do the skin entirely freehand (only 75%), I would recommend leaving the original face as you seem to be having a little bit of trouble pulling it off. Also, you should cover her torso if she is going to be wearing primarily winter gear.
The bow pom-poms seem a little less fluffy than they should be, I'd recommend either alphaing them out all together or trying a different approach with them. Turning them into snowflakes would look interesting, but with the way alpha works you should just alpha out a hexagon for the snowflake, and create all the other spaces with shading and highlights, if you go that way. Those could be just about anything, really. The bow looks a little awkward being that shade of red, makes it look rather plastic. Maybe you could add pinstripes and turn it into a candy-cane
The cape looks really blurry and stretched, see if you can fix the cape so it doesn't look so bad.
The arrows only really show up in the quiver, it would be interesting to see them turned into something more Christmasy poking out of the bag on her back
Anyways, The shading is decent enough, but the face really needs more work. a lot of the skin could use more touch-ups and fine tuning as well.