Now that we selected our entry (which is - let me state that again - amazing), it's time to think about other things. First of all, the song is definitely in need of a revamp. It sounds good the way it is, but it needs some extra oomph, which will convert the song from a radio hit to ESC song that could actually do very well.
Also, they should really start thinking about the staging. The song doesn't need dancers or any special gimmicks, but even positions, where each person stands, can really change a lot. I would 100% scratch the band, because it doesn't suit the song at all and move back-up singers further back, especially if they'll stay with Nika and Manca. It was more than visible that Nika and Manca are pretty successful solo singers. They are both used to performing by themselves so they stood out way more than they should (especially Nika).
Of course, styling is very important as well. I'm no specialist in this area, but I know that Tinkara used to look very good. She should go back to her dark look with long hair and WITHOUT bangs. She also needs to change her dress, because it's awful.