Think about it. The shower really is a sort of secret world.
You never really see anyone else shower (hopefully), so you don't really know what anyone else does in the shower. I mean, obviously they bathe themselves and get clean, but, for example, what order do they do it in?
I've thought about this many times while in the shower. I have a natural routine, and can't imagine doing it any other way. First off, I'm not the kind of person who gets in the shower and then turns the water on. If you do that, you run the risk of getting sprayed by freezing cold water--not high on my list of things I want to do. So, I turn the water on, get in when it's the appropriate temperature, and get myself completely wet. Then, I wash my hair, leaving the shampoo in my hair to sit while I wash my body, starting with my neck and moving down my body. I rinse off both body and hair, put conditioner in my hair, and let it sit while I wash my face. Then I rinse it all off, and get out. This is the only way that feels right to me.
However, I'm sure you do it differently. And I will never know. And that, my friends, is why the shower is your own secret world.
You could be doing it wrong, but is there really a right way? Who's to say? To you, whatever you do in the shower is the right way to do it. And no one is going to convince you otherwise.