Moving From Flat to Correct Pitch

Most new shakuhachi players play flat so learning how to get the correct pitch is really important.
So here’s some ways that might help you to move from too flat to correct pitch. As a new player you want to correct your pitch as soon as possible. It’s very bad to get in the habit of playing flat, much harder to correct when you’ve been doing it for a long time.
To start with you need to know what pitch is correct or you’ll never know when you get there. Get a recording of someone playing individual notes at the correct pitch or use a tuner. They both serve a different role. The recording lets your hear what the correct sound is external to you and the tuner will let you know when your sound is correct.
Try doing exercises to learn how to increase your ability to bend the pitch up and down. the initial way is with a head tilt that should change the angle of your flute in relationship to your mouth/lips. Be careful tilt your head only, don’t move the root end uf the flute up and down.
Them try changing the pressure of the flute against your lips. If you’re jamming the flute against your lips this can cause your flute to be flat.
The next reason and this is a big one, there’s a chance that you are not blowing hard enough and with insufficient diaphragm control. When beginners are flat it's often because they are not blowing correctly. Your breath should be from deep in your chest and stomach. This goes hand in hand with having a good embrasure.
Speaking of embrasure, simply by tightening and loosening lips, no head movements you can change the pitch. Try playing a note for example on ro:and then by tightening and loosening lips, (again no head movements) change the pitch. This is not easy but it will help you develop a lot of control.