I would say if you're focusing on shading/rendering/light it's also great to establish the underlying construction. It's good to see whats underneath as figure drawing is mainly not about finishing a piece but to capture the essence of the figure (key points/angles/volume/contours/shapes). Proportions are pretty good which is good to get your proportions right before you start Rendering/Shading. I like the life you brought to this drawing, its well done (like the face) which makes the face pop out more compared to the whole body, figure drawing you want to see constructive line work, like math, good to see the work that went behind it but also good to draw light especially the poses that require more time The last part is always the shading & rendering, if you are focusing on light you also have to focus on the dark areas as well, seems like you were too focused on the shading then the overall scope of the figure, what I do is I acknowledge the bright areas & work around those to the darkest to light of shading/rendering or vice versa. So you gotta pay attention how the shading & rendering wraps around the figure cause some of the shadows look flat but I do see some good areas like the right thigh (models left thigh) looks like your going in the right direction just wrap around those shadows more or make those dark parts darker & the light parts lighter, we want to see variety like very dark to very light like some of the part in that left arm (models right arm) but take it further. Shadowing & rendering makes the 2d drawing 3d so you really got to highlight the darkest shadows to the mid shows to the lightest shadows, then the highlights (small areas around the body that pinpoint where most of the light is hitting, the brightest small areas of the service). That should help you embody your depth better of the form & figure. Do these normal classes but also on the side, sit with other pictures that you can just look at & doesn't have a timer, really get those forms down for the body & volumes that wrap around the figure. You can practice in parts, like oh doing one arm drawing & following through each of the construction drawing process, not just the gesture/stick figure & contours but the shapes that have volume inside the contours & around the gesture, then do another part of the body & of course a full figure drawing then come back to the timed/class sessions and do the same thing. good to establish the form/shape/volume first before rendering/shading. Which will be easier & have more of a base to put your shading/rendering on so that lighter areas pop out more, so when you get to the shading/rendering you know how to accurately wrap around those body parts & where to put all the shading/rendering/light and lastly highlights, so when you come back & done more timed drawings you can approach it better way so your speed improves & your construction improves. I would focus on the shapes & the depth of those shapes, if you think & do thee shadows/rendering first then it will end up flat & doesn't leave any depth/dimension to your drawings.
That was a lot but a lot of crucial key points in my critique. Crucial for you to follow & pay attention to mainly how you construct these forms for better light/shadow/rendering.
I hope that helps, you will improve nicely with that advice.
Have a great day & keep moving forward as an artist! :)
I would say if you're focusing on shading/rendering/light it's also great to establish the underlying construction. It's good to see whats underneath as figure drawing is mainly not about finishing a piece but to capture the essence of the figure (key points/angles/volume/contours/shapes). Proportions are pretty good which is good to get your proportions right before you start Rendering/Shading. I like the life you brought to this drawing, its well done (like the face) which makes the face pop out more compared to the whole body, figure drawing you want to see constructive line work, like math, good to see the work that went behind it but also good to draw light especially the poses that require more time The last part is always the shading & rendering, if you are focusing on light you also have to focus on the dark areas as well, seems like you were too focused on the shading then the overall scope of the figure, what I do is I acknowledge the bright areas & work around those to the darkest to light of shading/rendering or vice versa. So you gotta pay attention how the shading & rendering wraps around the figure cause some of the shadows look flat but I do see some good areas like the right thigh (models left thigh) looks like your going in the right direction just wrap around those shadows more or make those dark parts darker & the light parts lighter, we want to see variety like very dark to very light like some of the part in that left arm (models right arm) but take it further. Shadowing & rendering makes the 2d drawing 3d so you really got to highlight the darkest shadows to the mid shows to the lightest shadows, then the highlights (small areas around the body that pinpoint where most of the light is hitting, the brightest small areas of the service). That should help you embody your depth better of the form & figure. Do these normal classes but also on the side, sit with other pictures that you can just look at & doesn't have a timer, really get those forms down for the body & volumes that wrap around the figure. You can practice in parts, like oh doing one arm drawing & following through each of the construction drawing process, not just the gesture/stick figure & contours but the shapes that have volume inside the contours & around the gesture, then do another part of the body & of course a full figure drawing then come back to the timed/class sessions and do the same thing. good to establish the form/shape/volume first before rendering/shading. Which will be easier & have more of a base to put your shading/rendering on so that lighter areas pop out more, so when you get to the shading/rendering you know how to accurately wrap around those body parts & where to put all the shading/rendering/light and lastly highlights, so when you come back & done more timed drawings you can approach it better way so your speed improves & your construction improves. I would focus on the shapes & the depth of those shapes, if you think & do thee shadows/rendering first then it will end up flat & doesn't leave any depth/dimension to your drawings.
That was a lot but a lot of crucial key points in my critique. Crucial for you to follow & pay attention to mainly how you construct these forms for better light/shadow/rendering.
I hope that helps, you will improve nicely with that advice.
Have a great day & keep moving forward as an artist! :)