Music project in school

I would need the following:
A song that is made electronic for example with garageband or something similar
The song is going to start with an intro
Then the verse with the following chords: ||: Am | G | F | G :||
And a melody to that
Then the chours with the following chords: ||: C | G | F | G :||
And a melody to that
And then an outro and then it is finished
The song is going to be for about a minute long.