In this sentence, is the past participle of ‘clasped’ in ‘with his hands clasped over his fat bottom’ to be changed to ‘clasping’?
He brought the umbrella swishing down through the air to point at Dudley — there was a flash of violet light, a sound like a firecracker, a sharp squeal, and the next second, Dudley was dancing on the spot with his hands clasped over his fat bottom, howling in pain. When he turned his back on them, Harry saw a curly pig's tail poking through a hole in his trousers.