The bottoms ones do look more fluid, but it might also have something to do with how warmed up you were as well. I noticed your proportion markings in the first set of full bodies, so you seem to have concentrated harder on the actual porportions. The line weight kind of suggests this too, in both the full and the frame drawings. Maybe, to better judge and maybe see how comfortable you are with it, do a full practice session standing, then do another different full practice session the next day sitting?
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