TEMU 3” black pointy toe heels

These TEMU heels are black with a 3” block heel and pointy toes. I wear a 10 and these are definitely a 10 1/2 - too big for me. A friend told me that with TEMU you can’t go by normal shoe sizes, you must measure the length of your foot. These are 10 1/2” in length. Size: 10 1/2