Pay attention to your flute teacher's or band director's advice.
Then --
Practice! Practice! Practice!
what can i do to blow better on my flute?
4 answers
If you practice an hour a day, you'll improve.
If you practice two hours a day, you'll get even better.
If you practice two hours a day, you'll get even better.
You may find this site helpful.
http://www.ehow.com/videos-on_3505_play-flute.html
http://www.ehow.com/videos-on_3505_play-flute.html
practice as much as possible & when blowing into the flute, try not to blow directly into the hole in the mouthpiece. position your lip at the edge of the hole in the mouthpiece and try to keep the air you're blowing into the flute consistent