Here’s something useful. I tried it and after a few practice runs it works great.

http://www.howtofoldashirt.net/

Translation from Chinese:

“Start by laying the T-shirt flat and sideways in front of you, neck opening to your right. Find the centerpoint on the far side and pinch it with your left hand, about two inches in from the far edge.

With your right hand, draw a line from your left hand to the right edge of the tshirt, parallel to the edge of the shirt. This brings your right hand to the neck-opening side of the shirt. Grasp the edge with your right hand.

Now, while maintaining your grip, cross your right hand over your left, towards the opposite (waist-opening) end of the tshirt. Maintain the same imaginary line you’ve been working on (about two inches from the far edge of the shirt, parallel to the edge) and add the new edge to the grasp of your right hand.

This is where the magic happens. Simply uncross your hands and extend them in front of you, lifting the shirt perpendicular to the floor. Complete the fold by letting the loose arm hole drop to the floor and folding the shirt in half over it!”