In just a little over a month, you've already improved a great deal; the top half of that Miko is really well done.
What I will say is that sometimes bits of limb are chopped a little too much by a brush stroke, or the anatomy of one part will detract from the high quality of the rest of the picture; the Miko, for example, is really well-done and looks pretty spiffy, but her weirdly shaped body and strange left arm detract from the overall composition quite a bit.
Regardless, keep it up! :3