help decorating girls bedroom pink and green cottage style?

I need some advice , my little girl is 6yrs , all her wardrobes, chest,bedside cabinet and iron bed frame is all in white, with white blinds and voile/tulle white curtains. The main bedding will be white with a throw at bottom and a chunky knit blanket.
I have got a laura ashley throw for the bed (geralidine) and matching cushion , also some nice gingham check(heath green) and pink polka dot material for cushions , i will paper the one wall where her bed will be in laura ashley abbeyville(cream background with little pink/green rosebuds)
MY DILEMA is - what colour to do the walls and what colour carpet- do i go pink or green.
Should i match the carpet with the wall colour ??? Please help needed, how do i accessorise this room to make it girly without looking too green or too pink?
The throw is below
http://www.lauraashley.com/bin/venda?ex=co_wizr-locayta&template=wz_locayta&pageno=1&perpage=16&collate=ivtype%3Aprice%3Aatrxcolour%3Aatrxsize%3Apdxtcollection%3Apdxtinspirations%3Apdxtlaunch%3Apdxtbedstyle%3Apdxtbedlinenstyle%3Apdxtfabric%3Apdxtbedspreadstyle%3Apdxtfinish%3Apdxtstoragetype%3Apdxtscent%3Apdxtgender%3Apdxtcurtaintype%3Apdxtheading%3Apdxtcurtaindesign%3Apdxtwindowtype%3Apdxtcurtainpolefinish%3Apdxtcurtainaccessory%3Apdxtrange%3Apdxttoiletrytype%3Apdxttowelstyle%3Apdxtstyle%3Apdxtoccasion%3Apdxtsleeve%3Apdxtneckline%3Apdxtcoatstyle%3Apdxtlength1%3Apdxtdressstyle%3Apdxtjacketstyle%3Apdxtnightwearstyle%3Apdxtskirtstyle%3Apdxttopstyle%3Apdxttrouserstyle&refine_sort_alph=&setsortorder=relevance&threshold=50&fieldrtype=type&termtextrtype=invt&typertype=exact&typekeywordsearch=keyword&termtextkeywordsearch=geraldine