If you can’t work it out:

- Lay the t-shirt flat, and pinch it with your left hand at three-quarters width and as close to half way up as you can guess at.
- With your right hand, pinch the top of the t-shirt parallel to your left hand.
- Bring your right hand over your left hand to the bottom, still clinging to the top of the t-shirt.
- Pinch the bottom and top of the t-shirt together with your left hand, and uncross your hands in the air, still holding the middle with your left and both ends with your right.
- Lay the folded t-shirt down so the hanging sleeve is now underneath!