Hi, your practice studies tell me you dedicate too much effort for the wrong reasons. You usually use straight lines the entire time and I am sorry to tell you but that's not enough, straight lines are really rare to see, unless you either want to really want to simplify or the pose itself really is that static.
Next point, simplify more, dont draw the legs as the different curves that make it, just draw a triangle as the thighs and a line for the rest of the leg to attach the foot as a triangle after (triangle if it is shown from the side and a trapezoid if shown from the front.)
Next thing, the shapes of deconstructing the pose are wrong, they are in the middle of being two dimensional to kinda respect a third dimension. Try drawing the torso as a clessidra, you first find the line that connects the shoulders and the other one for the legs.
Finishing off be aware of the proportions, a head and the torso together should be as long as the legs. The head should also be big enough to be half of the distance the shoulders
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