Thanks Asatira and Mr. Guiang.
I get told a lot to branch out. I've learned to do things methodically and step-by-step, because I think that's the most efficient way of learning. I have chosen to focus on the human body because almost all problems of drawing are present in the human figure, i.e. whoever can draw the human body can basically draw almost everything else. So my belief is that in a way drawing the human figure is in itself already the most "branched out" approach toward drawing, because it adresses so many problems of drawing at the same time. For example let's say I focus on drawing futuristic vehicles and landscapes. Even if I get really good at that it doesn't mean that I will be good at drawing humans, in reality I would have tremendous problems, because the human body is extremely more complex than any weapon design, vehicle or landscape. But on the other hand, if I first learn to draw humans really well then I won't have any problem drawing vehicles, weapons, monsters etc. Well, that's my theory, let's hope that the theory is correct. ;)
Right now I'm working through Hampton's book. Chapter by chapter. Now I'm at feet, then comes drapery. Then I will spend some time on parts of the body that I have problems with. Head-neck-shoulder connection. Ribcage-hips connection. Things like that. Then I'll probably focus on drawing full figures with sci-fi equipment, armor etc, just classical concept art, character design. I plan to buy a tablet in fall and then we'll see.
Anyhow, daily 150sec gestures:
Imagination. Messed one up pretty badly, sry bout that. :/
And some feet studies. I've tons of those, just quick throw-away studies, some from reference (Hampton, Chen, Bammes, Peck) and some from imagination.