Hello Carlos. I'm digging both the loose gesture as well as the more structural gesture sketches you made. I think if you can combine the more rhythmic, flowing lines of the left sketch with some of the structural forms you included in right sketch your gesture drawing will be dynamic while also having a sense of solidity. I think keeping proportion in mind can help too, such as shrinking the head just a bit and bringing the knife closer to the face of the model. Since its a gesture the proportion probably shouldn't be rigid but I think wouldn't hurt to consider it. As for advice on studying poses efficiently perhaps you can set goals on what aspect of the figure want to gesture in. For example, do you want your gestures to focus on the energy and movement within a figure or do you want to focus on the masses? Perhaps a combination of both? You could try doing the gestures of animals as well. Perhaps there's something from animal gestures that you can take and instill into your human gestures. That said sticking to time limits and practicing will help improve efficiency too. I hope this is somewhat helpful (though a bit long-winded...sorry). These are great gestures and I wish you the best on your artistic journey. Though you may have "down" days when sketching, drawing, painting, etc. (I know I do) be sure to have fun and enjoy the moments you get to create art no matter how brief. Happy drawing!

Hello Sanjanart and I hope you are well. I think determining a Line of Action would be helpful for your gestures. One way to find it is to find which parts of the body are bearing weight and loosely draw a line through them to the head or another convenient body part. As for the chest area or ribcage try thinking of it as a bell or an egg shape. You could even draw it as a boxy shape. Sometimes it tilts in the opposite direction of the pelvis like in your first image. Look up “Contrapposto” for a better idea. As for curves and angles try to have them follow or emphasize the forms of the figure you are drawing. I think you would find the book, Force: Dynamic Life Drawing for Animators by Mike Matessi, very helpful for this and for gestures in general. Some knowledge in anatomy also always helps. I’ll try to post a drawing that will hopefully help you too. Best of luck and keep up the good work!

Hey Matthew. I think that brush could produce some sandy or even whispy textures. It would be great if you could vary the values of each stroke. Maybe you could tinker with the pen pressure settings for that. Great job and keep experimenting!