There are a few key things to keep in mind when managing Facebook accounts for clients:
1. Make sure you are using the same IP address and browser each time you log in to the account.
2. Do not post too many times in a short period of time, or post duplicate content.
3. Be careful not to get caught up in spammy behavior, such as clicking "like" on every post or inviting people to like your page en masse.
4. Make sure all posts are relevant to the client's business and target audience.
5. Keep an eye on your account's analytics to make sure engagement is high and that the posts are reaching the correct people.