^true. In future go to conceptart.org if you want people to actually answer you.
That said, you have a really good sense of weight and balance in these, which is cool. Faces? I wouldn't worry in these 5 minute ones - there's not enough time. Just get a quick idea of the face in there or leave it out entirely. I'd concentrate more on getting the feet too, which you're sometimes leaving out. Often a drawing looks better without them (especially if they're in an awkward position), but then one day you'll wake up and realise you have no idea how feet work.
Trust me, it's better to get the feet in now rather than spend hours in the future just drawing feet.
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