A piece I wrote for a film in 2014.
https://youtu.be/l5b8JHst_CM
If you have a melody that is catchy, just add the standard film score orchestral instruments like strings, flutes etc and play the harmonies to match the melody in the form of three or four notes. The whole thing will take you an hour and you will have a wonderful piece of work.
If you are interested in my work please contact me : samanbarid@hotmail.de