Great advice from Brent. "You can't paint the walls before you build the house." I do think you moved to shading too quickly. How long was this timed gesture? Timed sessions aren't meant to yield finished drawings, they're specifically focused on the "starts." The point is to run out of time and move on so you can refine your process for the early stage of the drawing where rhythm, gesture and structure are established. The gesture here isn't complete, so it's a quick indicator you started shading too soon. Always try to connect your figure to the ground. The feet and hands are as important to communicating the pose as the rest of the body, they're huge opportunities for visual storytelling so don't hide or omit them. Even an indication is helpful. The left hand behind the head isn't clearly defined or proportional, and theres a continuity break from the knee to the tibia when it goes behind the right thigh. These are gesture and rhythm concerns, so I'd suggest focusing your timed sessions on completing the figure as much you can and save shadow mapping and shading for another session where you have time to focus and execute on that part of the drawing. The more refined you are with your starting gesture and structure, your shadow mapping and details will more convincingly describe the forms you've established, and almost reveal themselves if you've done the work. To answer your initial question, if theres something you really dig about a pose and want to deep dive on it in the middle of a timed session, that's fine, but that breaks focus from the purpose of a timed session. Just be aware of it. It helps to have a singular focus for each timed session especially if the timer is under 3 minutes per pose. Try just executing a 6-12 line gesture in 3 minutes. Focus on designing the flow of your rhythms. Eliza Ivanova recommends doing targeted gesture sessions for hands and feet specifically where she spends 1-2 minutes just drawing the hands of the pose so when she goes to a full body timed gesture she's practiced the starts of hands so many times already she can get a quick and convincing indication in a short amount of time. Hope this helps. Keep up the good work!