Hi, there are a number of reasons why your car won't have the depth of shine you want.
1) The paint could be slightly oxidised?
2) Could need claying?
3) Covered in Swirl marks?
If the paint is oxidised, you could correct it by polishing by hand, however it would take a hell of a lot of effort.
Has your car been clayed in the past 12 months? If not, definately worth doing, it gets rid of bonded contaminents and makes your paint work feel as smooth as glass. The Meguiar's Smooth Surface Clay Kit is a good start:
http://www.waxamomo.co.uk/productcart/pc/viewPrd.asp?idproduct=115&idcategory=4If your car is covered in Swirl marks then it needs a really good polish. Again this can be done by hand with the right products. The best product on the market to get rid of both oxidised paint and swirl marks is this:
http://www.waxamomo.co.uk/productcart/pc/viewPrd.asp?idproduct=168&idcategory=19If you get a free day to spend on your car, do this:
Wash
Clay - Megs Smooth Surface Kit
Wash
Polish - Megs Ultimate Compound
Polish - Augoglym SRP
Wax - Autoglym EGP x 2 Layers
Sit back and admire
