It's good, but I would keep using reference for the parts you're having trouble with, particularly the face and the legs. Drawing from the mind is fun for relaxation but you can't learn new things from what's already in your head.
I did quick 5-10 minute sketches playing close attention to the angles of the legs. Going to be working on the head, feet,arms and hands tomorrow. Oh and more legs. Legs legs leggsss. Probably also going to do some foreshortening stuff too.
Did some quick doodles, not really paying attention to the details.There are a lot of mistakes, but I was focasing mainly on the angle and not the measurement. I have some hand studies somewhere, but... I can't find it!
Left some skull/face and forshortened female body from the worms eye view, the one you see now was a quick one ! .
though, it's in my dads car so when I find it, I'll show you guys.
I like the wispy lines that you use when you have confidence in your subject and you know what you're doing, that shows a real skill. I would suggest doing some anatomy studies of specific features like the arms, head and hands.
In reference to the last picture you posted, you've done a good job of getting the angle of her left leg but the rest of the figure lacks structure. I just did a quick redline to show the basics of what i mean, the red is a few basic corrections to the form and the blue shows the parts of structural importance and the relationship of the hips to the shoulders. I hope you find this of some use and good luck with your further drawings~!