Does not look natural..check out X Factor judges. Try whitening toothpaste for a while. Drink fruit juice through a straw, limit tea/coffee/red wine intake, gently clean teeth twice a day and eat sugar free gum after meals. Don't smoke.
Having your teeth whitened by a dentist can thin the enamel and eventually your teeth will decay quicker than normal. Better to use tooth whitening toothpaste regularly.
I had my teeth laser whitened. The price included a made for me mould with a couple of syringes of a peroxide solution to use once a month for 2 hours a night. It whitened my teeth by 7 shades but you will never have white teeth if your teeth aren`t white naturally. Not everyone has naturally white teeth. I asked the dentist why US tv presenters have such brilliant white teeth and he said nobody would ever have teeth that colour. They`re veneers.
As I have mentioned earlier, the dentist has to roughen the enamel of your teeth to be able to stick veneers to them, thus eventually ruining your teeth, especially if the veneers come off a few times.
I did BriteSmile once which was very good and my teeth never went back to what they were before, also now got moulds and gel to use occasionally to top up which also works well, doesn't cost as much and my dentist says is safe.