For 3 gigs ($15), I will arrange your song for you. No matter the complexity and length of the song. If the song is complex and long the duration of time I need to work on it may be extended.
What I will not do is add SFX, Transitions, etc for your song as the only thing that I am doing with this gig is arranging your song for you. I can definitely give you advice on what I feel needs to be added to the song.
I have been producing music for over 7 years and know how it should sound and how to arrange music.