I do follow all the steps as officially declared by V1 and Mistero..... but i rinse the car after doing each part.... and at the end i do a quick re shampoo on whole car and rinse it again.
I never open the door and spray water on the sides, rather i do like @mistero and clean it will a wet microfiber.
At the end, i use my small air compressor with a nozzel and remove all water inside the side mirrors, under the side mirros, behind number plates, front grill (as it is fav place of water to hide and start to drip when start waxing) and once i am sure there is no water left on car i am done with the car washing.