Yeah, you've done a nice job with these two. Focusing on Kriemhild, you've done a very nice job with the shadow and highlight placement on all those folds in her clothing. Now you've got to work on those blends and use more intermediate mixes to smooth them out. That dark colored cloth on the right for example has some really start contrast between the different colors you used. You can try to fix that by using thinner coats and more intermediate layers. Or you can try your hand at wet blending.
Female figures are tough. As Zab said, doing too much with the shadows and they look old or like dudes. But my thought is you can still have contrast on the major shadows. For Kriemhild that would be under her chin and the undersides of her arms. Keep the shadows on the rest of her features, all those fine details, subtle. It can also be a matter of relative values. You could certainly take the contrast on her hair up and make those shadows more dramatic. If the contrast on her hair and clothes is bigger than the contrast on her skin, it will help keep her features subtle and feminine. If you leave the hair and her dress the same you'll be much more limited on what you can do with her skin before it all starts to look 'wrong.'
You can take a look at the White Speaker figure in my gallery. Some areas of her skin are much more dramatic than others. Overall I went a little farther than I needed to since I wanted her to look like a tough warrior. So for a figure like Kriemhild I'd tone it back a bit. Also notice that the contrast on the hair and clothing (well, what little she has) is in proportion to the range of light to dark on her skin.
You're definitely on the right track. Shadow and highlight placement is not easy, especially on all those folds, but I think you've done a great job with it. Just continue to work on your blending and, as that improves, up the contrast. My general approach is to paint to a contrast level I'm comfortable with and then go one or two steps beyond that. Everything looks more dramatic when the mini is right up in your face. But step back and all that contrast seems to fade away. You clearly know what you're doing, just keep practicing and your results will keep improving.