Produce a dynamic, expressive charcoal sketch inspired by Francis Bacon's Portrait of Isabel Rawsthorne Standing in a Street in Soho. Using loose, energetic lines, render the figure with clarity and definition, paying close attention to the contours of the face and body. Infuse the work with a sense of motion and intensity, mirroring Bacon's signature style and his ability to convey emotional weight through simple mark-making. Experiment with tonality, playing with areas of deep shadow and stark white highlights to imbue the piece with depth and complexity. Ultimately, seek to channel Bacon's masterful handling of materials and his keen understanding of form and gesture.