Sure, think of the sketch as a photograph taken with a shallow depth of field. Keep the focus tight on the most critical anatomy— the joint line, the spine curve, a clear silhouette of the pelvis—and let the rest be implied. Use a light, sketchy line to suggest muscle tone or bone structure, but stop once you’ve sketched the axis of movement. If you find the detail creeping in, step back, close the sketch for a moment, and ask yourself: “Does this line help the viewer see the form, or is it just decoration?” Strip it away if it’s the latter. Also, keep a consistent rhythm of thick and thin strokes; the thinner ones can hint at detail without crowding. Finally, when you’re happy, lift the sheet and let the negative space breathe—often that space will reveal the shape better than a fully detailed version.