Tips on composing concert band music

Hey everyone,

I've been learning music production for 6 months now but I've never been able to recreate the same feeling as a band piece, I did find some success with my music however they are just never the band type :(

I've played in my school band and really loved it there so I've always wanted to compose my own music that can make people happy and energized too. I made this melody that I liked rather much and I'm wondering where can I go from here to composing a band piece from it? https://soundcloud.com/lol-olo-956054959/ideas?si=86472d940d4b49bb87c7b307d4998d7c

Thanks, it means a lot!