Re decorating my bedroom?

Ok, well every weekend I stay at my nan & grandad's country cottage, and they said I can re design it how I like! I am 13 and very girly, I am exetremely tidy and love cute, young looking things.

This is how I plan the layout to be:

http://i268.photobucket.com/albums/jj8/Monkeybabiii/Bedroomplan.jpg

the day bed is going to be a single one.

The wall where the bed is against will be done in this wallpaper:

http://www.lauraashley.com/Wallpaper+Borders/BELLA-BUTTERFLY-WALLPAPER/invt/3424798

as a signature wall, all the other walls will be painted white. These lights will go over the bed:

http://www.lauraashley.com/Lighting/STRING-OF-HEARTS-LIGHTS/invt/3415214

This is the bed I'm getting:

http://www.ikea.com/gb/en/catalog/products/S89807443
with this duvet:
http://www.lauraashley.com/Bedlinen-/MULTI-PATCHWORK-BEDSET/invt/3408437
and lots of cute Laura Ashley cushions etc.

Then this rug:

http://www.lauraashley.com/Rugs/BELLA-BUTTERFLY-PINK-RUG/invt/3427518

and baby pink curtains.
Also, on the wall I thought about bunting:
http://www.lauraashley.com/Accessories-/KATIE-FLORAL-BUNTING/invt/3376209

so it will look adorable basically!

What do you think..and what else could I put in there?

Not too expensive, bare in mind I am buying it all exept the bed.
I need to keep it looking traditional as it is a very old chocolate-box style cottage. The wall where the window is has a sloped roof with a few dark beams around the window so I can't do anything to that wall.