Learn the notes of the Japanese pentatonic scales.These are scales consisting of five notes set specific intervals apart. One of the most common Asian pentatonic scales is Yo, used in Japanese flute music.
Build a progression based on the tonic of the Yo scale. The tonic is the first note of the scale. For example the Yo scale based on the note D in Western notation reads: D - E - G - A - B. Your progression should begin and end on D.
Introduce an Asian rhythm into your progression by introducing pauses. Japanese flute music often makes use of periods of silence. Generally, Asian melodies operate in "Free time," that is, time without explicit meter.
Add an Asian flavor to the melody by playing it on an traditional instrument. You can play in an Asian style on any instrument, but to drive home the aesthetic, play it on an instrument such as a koto or shakuhachi.
Finish your melody by introducing dynamics, which are changes in loudness and softness in a melody. Pick which notes to accent, or play louder, by their dramatic effect in the music. Notes at the peak of a melodic line or notes that are the beginning or end of the melody often benefit from accented dynamics.