How to earn this amount of money? I'm 13 but will be 14 in about a month?

I really wanted a new ipod because i love music and listen to it constantly, i wanted the new ipod touch 5th generation so that i could watch films in the car and places without taking my ipad or laptop. The ipod is £249 (for the one i would like some are £199) this got me thinking about how i need a new phone as mine is struggling to work properly and my parents get annoyed at me as i don't use it (i don't call people only text and i cba to charge my phone for just that) if i had an iphone i would use it as an ipod so always have it charged and on me. So i was looking at the iphones and i don't like the plastic of the 5c or the glass back of the 4s and then i fell in love with the black and slate 5s! Bad right! The 5s is £549! My birthday is coming up as i said, and then shortly after that is Christmas i usually ask most of my family for money so i can buy my own stuff this means from both christmas and my birthday i can probably get £300 at least £200 anyways. How do i get the last £250? Help! It might even be £300! And no i don't want another model and no i don't just want the ipod and yes i know you can get it so you can text on there but anyways. I don't think i would be able to find somewhere to do pot washing or anything. I could do some chores for my grandma and paint her fence and things but that won't get me much. Do you have any ideas? Thanks. (sorry about the long writing haha)

Added (1). I don't have many skills apart from art. I could probably make lots of money with my art but i have no idea how i would do that!

Snow shoveling, my man.