Very nice! For sketches, these convey quite a lot...the one minor problem I note is that some of them (particularly that last one) look out of balance, ready to fall over.
And the top right one...I think this is the sketch quality more than anything, but I can't tell if he's in a blocking stance or if he's playing a flute while walking. (Given the dynamic, action, fighting nature of the others, I'm thinking that he's blocking...In which case, he's off balance and going to fall back and to his left within a few blows)
I do a lot of this sort of thing, so I recognize quality when I see it--your poses are very good, just work on the balance a bit.
Thank you! If you like my works feel free to watch me so that you can see more in the future Also, I don't know if you noticed, but i founded an official Mark-Of-Darkness Group, feel free to join as a member/watch if you like the saga i'm developing!