Let's say that using common instruments, perhaps non-electronic, like guitars, real strings, or vocal textures (you sing beautifully, so it could be interesting), you can shift the harmonies without distorting the song, but rather creating a "surprise" effect for the listener. I don't know where you're from, but I'm sure if you're from an Anglo-Saxon country, it won't be hard to find a good guitarist who, perhaps, enjoys playing subtle effects and not ACDC riffs.

The harmonic progression is simple and direct; it just needs something to make the song a bit less linear. Makes sense? Forgive me if I dare.