How to handle Japanese Chopsticks?
This is not just the most efficient way, but also the polite way to treat fine Japanese food. When people begin a fine Japanese meal, they say "Itadakimasu" meaning "I am thankful for receiving these fine dishes."
1. Positioning and holding the Japanese chopsticks: Stick (A) is held by using the thumb to press the stick against the hand and ring finger as shown. Stick (B) is held by using the index and middle fingers to press the stick against the thumb as shown. To catch and hold food, move the index and middle fingers up and down. Please give it a try.
2. Taking up chopsticks Starting with the meal Using the thumb, the forefinger and the third finger of the right (left for the lefty) hand, take up the Chopsticks. Then support by the left (right) hand as in the figure (2), and re-position the Chopsticks by the right (left) hand as in the figure (3) and (4).
3. (Figures of 3) Putting down Japanese chopsticks Finishing with the meal Just follow the reverse directions of taking up the Chopsticks as shown in the figures whenever you take short rest during taking meal.

When finishing a meal, people say "Gochiso Sama Deshita" or "It was a wonderful treat".
4. (Figure of 4) Holding the bowl and the chopsticks at the same time: Take up the bowl first in one hand by resting the bottom of the bowl on the four fingers and placing the thumb on the rim Next, take up the chopsticks by the other hand.
5. (Figure of 5) When you finish the meal Place the chopsticks on the chopstick rest. If there is no chopstick rest, place the chopsticks half-way into the envelope, or tie the chopstick envelope into a knot and place them on the knot as shown in the figure. This is an elegant way of keeping the table clean, and politely signals your waiter that you are finished.

How to tie the chopstick envelope into a knot: (1) Fold the end of the envelope as shown. (2) Make a cross or a triangle as shown by folding the other side of the envelope making it a little longer than the other side. (3) Put the other end of the envelope into the loop of the envelope and fold it as pictured. (4) You're done!
6. (Figure of 6) How to Put Soy Sauce and Add more Wasabi When you put soy sauce on Sushi, put it on the fish side of the Sushi, not dip the rice of Sushi into soy sauce. Note: You could use your hand to take Sushi, but please clean up your hands. Usually Wasabi is already put between the fish and the rice of Sushi by Sushi Chef, but if you want more Wasabi, put it on the fish of Sushi.