Mainly depends on personal flute level. Flute 10 level, performance level can join the symphony orchestra, or be a teacher in a senior art school. A little shorter can go to the flute company to audition and correct the sound and so on. Or you can be a tutor, or you can form your own small band, make records and so on. Generally, those below level 7 can only be considered as personal interests, and job hunting in enterprises is a specialty ~ ~