Will: I've never done any songwriting - I've always wanted to write songs but I never knew how to go about it.
I play the piano but not well enough to write music.
I used to record melodies and record my voice but I never had any instruments - it's been such a great learning experience.
Newsround: Is it something that you'll concentrate more on in the future?
Will: I think it's very important that you get the right songs.
If someone comes to me with a great song then I'll sing it.
If I happen to write it and it's brilliant then I'll sing that as well.
I definitely want to write more because I love the creative process but I'm quite happy to sing great songs wherever they come from.
Newsround: So you don't mind doing other people's songs?
Will: I don't mind, no. I think sometimes there's a lot of stress to write your own songs.
I love writing but if I heard a great song I'd sing that too.
I just enjoy singing, it doesn't matter - any time any place!
Newsround: You're number one at the moment with Gareth - you're on tour with him - what's it like spending so much time with together?
Will: He's unbearable! I've said this time and time again but people think I'm joking! The man is unbearable!
Newsround: Are you going to continue working with him? How well does it work?
Will: It's been so much fun doing the duet - doing it with someone else and getting to know Gareth better.
We've had such a laugh and now we're going on tour.
We're just getting to know each other better out of the context of the competition.
Before even though we never had a problem with it, we were against each other in the competition.
I think that after the tour we will go our separate ways.
My album's come out, his album will come out in the future and it's a nice parting - a friendly farewell!
Newsround: When are you going to be doing a solo tour?
Will: I don't know - get this tour out of the way first.
We had dress rehearsals yesterday and it's fantastic.
Maybe next year sometime I'll do some smaller concerts - I love the intimacy of 500 people or so.
We'll probably do some of those before doing a big tour again.
Newsround: How has your life changed since you've become the Pop Idol winner. What do you miss?
Will: I don't really miss anything.
I'm still the same person, I still have the same family, friends, still live in the same place.
I've just gained a lot of things.
The best thing about it is actually working for a living.
I spent so long in education and was thinking how am I going to get a job and how am I going to sing?
Now I'm singing as a job - it's perfect for me, it's a dream come true!
Newsround: You must miss going out for a pizza with your mates - has that changed?
Will: It has changed in terms of becoming a public face but I still go out for pizza with my mates - I promise you.
I still go out for a drink, still go to the park but people recognise me and no one ever recognised me before.