The short answer
What should a website for an accountant, lawyer or broker show?
People don't shop for a lawyer or an accountant the way they shop for shoes. They're usually dealing with something: a letter from the tax office, a contract, a mortgage renewal, a visa deadline. They want to know quickly whether you handle their kind of problem and whether they'll be comfortable sitting across from you.
So your page skips the mission statement. It says who you help in plain words, what you can do for them, and what a first meeting looks like: how long, what to bring, and what it costs if you charge for it. Then your credentials, and a simple way to book.
Your profession probably has rules about what you can say in advertising. You know them better than we do. You tell us, and we write inside them.