The method of ghusl

Asalam alaykum brothers and sisters I have a question about ghusl, I want to know if the steps I am taking to purify myself are correct. 1: I say bismillah before entering the washroom 2: I take a normal shower to remove any physical impurity 3: u make intention for ghusl and rinse nose and mouth, then I was the entire body from head to toe (I do fard ghusl, but u have heard that it says in the quran that if you make intention and wash every part of the body, you are pure) Jazak allah