Hermione took off his cloak, trying to keep her hands from shaking, then his shirt, and he let her do that, bowing his head and gritting his teeth from the pain. She should’ve told him not to close his eyes because the moment he did, his whole body gave out, slumping forward onto her. Hermione was unable to hold all of his dead weight, so he fell with his front facing the ground and his back was revealed to her.