Doing 2 min poses wouldn't hurt at all. Try them out and see what you're comfortable with. Before you move on, practice finding the line of action of these poses. The line of action is a line that usually connects the head to the toes -- it shows the energy/movement of the pose. Don't be afraid to push the exaggeration a bit to really get your point across, since we are only using a few lines in a 30 second drawing. Then, like you have done in your drawings, estimate the placement and angles of the shoulders. You can then use other rhythms and curves to help you find these landmarks. For example, in #4, I found the line of action in green (the s curve), and another important rhythm in orange that travels along the entire front of the model's body through the back leg. There is an argument to be made that the orange line could be the line of action. The reason I chose the green line is because it highlights the twist of the torso, which I think is a key aspect of this pose. The purple lines represent a curve that I would use to place the elbows and the knees so that they relate rhythmically to each other. Adding in a representation of the torso is a great idea! Starting out, the bean is an easy way to lump the ribcage and pelvis together. It's coming up soon in this series but here's a link to a tutorial to get you started: https://www.proko.com/course-lesson/how-to-simplify-the-motion-of-the-torso-the-bean/assignments Good luck :)

Maybe instead of framing it as limiting your line count, think about it as each line representing a conscious thought. I think you can use as many lines as you want to, as long as each line supports the form and function of the pose. You have really nice rhythm in these :)

You're doing well -- nice work practicing gestural lines that aren't overly contour-y or anatomical. I'll recommend a few things. You can look at some of my sketches a few posts below yours to decide if you want to take my advice. I have found that figuring out whose advice to take and whose to avoid is a big part of the battle in learning to draw. For your thirty second poses, you don't have to do this all the time, but I would recommend practicing drawing limbs and even bodies with a single, gestural line. I spent a lot of time rapidly drawing gestural sketches with bodies and limbs that were full enclosed, and while that's all well and good, I think working on single, flowing lines is good practice to make your sketches more gestural and expressive. Secondly, take a couple seconds to analyze each pose for the line of action -- ideally a single line that runs through the entire pose. For example, the bottom pose on the left image of a figure reclining with the arms outstretched behind them -- you could have drawn a single C-curve from the neck down and curving to the left all the way to the heel of the outstretched leg. The bottom left figure on the second page, the figure with one arm over their stomach and one above their head, you could have extended that line of the neck down all the way to the figure's right (our left) knee. You were almost there, but you drew two lines instead. It's okay sometimes to discard one of your trusty, go-to rhythms to accommodate a fluid line of action. Most importantly, keep it up. You'll be glad you did.

These are very nice! You should post more of these as you go. I’d love to follow your progress.

These are really nice!

these are the most dynamic drawings you've posted here so far, practice makes perfect ! Longer action lines bring more liveliness. To further enrich your gesture knowledge I suggest you also watch a couple of vilppu's gesture demo videos - it could give you insights into the mindset - ie https://www.youtube.com/watch?v=pa_2rL1K1mg

Awesome lines. I think that C shape of the hips pushing forward and away from the twist in the torso is really nice. I'd like to see that emphasized even more!

These are so clean! Nice work!

Keep going is the only advice I could provide. Gesture really is the secret to more expressive and effective drawing! Maybe increase the timer to 2-3 mins, idk....

Nice! Your gesture drawings show great potential; keep practicing to capture the fluidity and movement more effectively.