I think it just comes down to practice and constant repetition, but something to keep in mind is that a lot of incredible artists use references. I'm not sure if it's super important to know them by heart, but rather learning a rough idea of where certain anatomical points are helps to give you a guide when drawing the structure of the body. In another lesson on the Loomis head Stan actually mentions that once you have a good understanding of how the Loomis technique is used, you don't have to use it every single time as a formula (although if you wanted to you could) but rather let it inform the rest of the drawing. I imagine this is something similar! That's just my opinion though, so I could be super off the mark. In short, just keep at it. We'll all get there eventually! :)

I think that you’re on a good way! You’re trying to think in 3d forms and this kind of thing takes a lot of practice. I would suggest that you push it even more. Some parts of your drawing feel like you copied the lines you saw. Really think of what form fits best and draw the form out. I’ve drawn over your picture to show you what I mean. This exercise is really more about understanding how forms interact each other and less about the final result. You can try and trace forms over photos and try and recreate them on paper, this will help you understand how you need to approach these kind of drawings. Hope this helps!

it is hard to tell without having the original picture you used next to it but just looking at your drawing I would claim that your shoulders might be a bit broad and the whole torso area seems a bit long. The bottom seems to be a bit small in comparison and the legs seem very thin (allthough those are only hinted add and obviously were not the main focus). Again though, this it just what it looks like to me. Neither am I a great artist nor do I have perfect memory of the reference picture you used. Since it has been a while since you commented, maybe take another look? With some time between the creation and evaluation of a piece you see it with completely fresh eyes.

My understanding is, they are bony protrusions (hard points) that are fairly stable. I think of them sometimes as anchor points. Perhaps I need a "resting place" for my line that indicates the hip angle, I have the two bony parts of the asis for reference to find this. Or to find the angle of the shoulders, I know the clavicle hinges around the middle of the neck and I have the acromian process to follow and base a line on. Having these "anchoring angles" and center-line, I can then have a go at building my form using the other landmarks as references. Hope this helps.

@Oyindamola Adeniyi I think these are looking good! The same recommendations I made on your gesture sketches apply here too: getting more mileage and loosening up. If you need help with any other thing specific, just let me know. Keep it up!

Nice work, @Oyindamola Adeniyi! The drawings look very simple and clear. One thing I notice is that the lines feels a little bit tense overall, which is okay and even expected if you are still beginning your studies. For the sake of practice, just see if it's possible to do a lot more of these quick sketches - once you've grasped the concept of gesture, it's really just about getting more mileage. But try not to rush - face it as a long-term learning process. If you do a few minutes of this practice regularly, you'll probably notice a lot of difference already just over a few weeks and months. Don't worry too much about the linework quality, just make sure the figures are clear (aren't confusing) and try to relax and loosen up in the process. Try to push the exaggeration some more as you feel more comfortable. Also, you could even draw in smaller sizes so you could fit like 8 or 10 quick sketches in one same page. Hope this helps. Happy studies!

@Oyindamola Adeniyi Good effort! But, for this exercise, we're supposed to break down the structure of the animals using 3D forms (spheres, cylinders and boxes). The shapes you used in your drawings feel too much 2D, so try thinking the forms a bit more in terms of volume and depth. Using cross-contours should definitely help, but make sure as much as possible your brain is indeed visualizing things in "3D" on the page, more as if you were actually sculpting or modeling a solid object. Here's a quick example of how I'd do it, hope this helps.