I think this song is just Lorde dealing with her "newfound fame." It is new and cool to her now probably, hence the lines "I still like hotels but I think that'll change. I still like hotels and my newfound fame." The line "I'm not in the swing of things yet," is just the singer saying that she hasn't totally gotten used to being famous and all that comes with that yet. "Promise I can stay good", is an reference to the fact that a lot of celebrities and famous people end up "bad" or whatever; not genuine and just have broken lives, and she is saying that she hopes she can stay good, and thinks she can. "I'm little but I'm coming for the crown. I'm little but I'm coming for you." is just a reference to the music industry, and she is "coming for the crown" by way of writing and singing.
I think this song is just Lorde dealing with her "newfound fame." It is new and cool to her now probably, hence the lines "I still like hotels but I think that'll change. I still like hotels and my newfound fame." The line "I'm not in the swing of things yet," is just the singer saying that she hasn't totally gotten used to being famous and all that comes with that yet. "Promise I can stay good", is an reference to the fact that a lot of celebrities and famous people end up "bad" or whatever; not genuine and just have broken lives, and she is saying that she hopes she can stay good, and thinks she can. "I'm little but I'm coming for the crown. I'm little but I'm coming for you." is just a reference to the music industry, and she is "coming for the crown" by way of writing and singing.