She said: "I think I've learnt so much as a songwriter, there's going to be so much of an improvement because of that.
"I'm working on stuff quite tentatively, it's definitely still at the beginning and yeah, it's totally different.
"I wrote the last album about that world which was the suburb where I grew up and populated by my friends and people who were really familiar to me.
"Now I'm in a different place every day and I'm with new people every day and it's a different vibe."
The 17-year-old star has also admitted she is unsure she will still be popular in years to come.
She said: "Since I started making music, a lot was made of how old I was and it made me think about, what happens when I'm 25? Will people still like what I'm doing? Will it still be important if I'm not this hyper-youthful being?
"It's stupid, I know I'm being silly, but I can't help it. It's just one of those things. I'll get over it."
- Bang! Showbiz
