The feet over the head thing is a great way to blast your face, but it can be painful or impossible. I lay on my back and put my get flat on the floor and push my hips up and off the ground. Depending on how high up I push, when I cum, it flies toward my face. Sometimes I try to catch it in my mouth, others I just let it land on my face. I sometimes also end up kicking off with my feet and not going quite upside down, but still get my penis right over my face and mouth.