We cannot help but be influenced by our environment. So unless we consciously decide to write differently, we tend to write according to the norms of our profession.
For lawyers, that often means formal and stilted writing. Don’t ever start a sentence with “and,” and Heavens forfend if you end a sentence with a preposition (or with an exclamation mark!).
If you’re writing for a population of potential clients, are they all lawyers, too? If not, do you run your pieces by anyone other than your colleagues? And if you don’t, how do you know how your writing is perceived by civilians?
So here’s an action item: get thee a beta-reader who’s more like your ideal readership than your colleagues. And genuinely take in what that person tells you.