On the first one: it looks great overall! Especially in only five minutes you captured the overall shapes very well! I would reccomend doing some studies on the side view face, just to get the proportions right, and do the same for the right arm? I liked how you drew the legs though!
on the second one: again, for only five minutes, you captured the basic shape very well! I would reccomend to keep practicing with the torso, and do more studies with poses that also have twists. The shoulders/necks looks like they're not aligned quite right.
on the second one: again, for only five minutes, you captured the basic shape very well! I would reccomend to keep practicing with the torso, and do more studies with poses that also have twists. The shoulders/necks looks like they're not aligned quite right.