This is the song I modelled Su-Lin's Canto-pop song off of, though it's a Japanese pop song rather than Cantonese one, I think it still works. This was recommended to me by Olivia and it had a simple melody I could follow and an extremely wacky video that I thought Su-Lin would enjoy.

By having a song to model and follow my one off, it means I'm able to go back to it whenever I feel the song isn't sticking and go over it again.