Very Imaginative, and lots of cool experimenting.
A couple things -
I think what could help you develop your anatomy/life drawing is:
1) Use the Orb technique. Draw every mass, arms/legs, torso, head, neck, as Orbs. They don't have to be huge, but every limb and mass we posses shares this Shape.
2) Find the similar joints in these masses, mark them in. This will tell you the relationship between those points.
3) Watch the negative space. Instead of drawing the positive, which in this case would be the model/figure, draw the space which surrounds her/him.
This will help you draw more accurately in size/proportion.
4) Do lots of 30 second Rapid Contours. And do long poses as well, I'd recommend upwards of 5 minutes, say up to 30 minutes. This will give you an idea of different effects and techniques you can use to help you draw more realistically.
As far as Experimental Art goes, you have it down really well! I would keep experimenting as you learn, and apply what you learn to the process!
Great Sketchbook, looking forward to more yummies