If there's one takeaway worth stashing in your social media management agency's back pocket, it's this: make a reasonable promise and over-deliver.   As a new social media management agency, you need to consider a practical and realistic service offering. You're one person with a finite amount of time, resources, and attention. This isn't to say you shouldn't want to do a good job on behalf of your social media clients. On the contrary, that's all you should want to do in an effort to build trust and drive retention.   Just make sure that you're taking into account time constraints and unpredictable future challenges.   These might include: