One of the biggest priorities for designers is creating and maintaining a client base. Without one, the designer is out of work. Unfortunately, even after months of work with a client, you can lose them with just a single, simple mistake.

Alexa D’Agostino has a list of 15 mistakes you can make that will lose you clients. Most of the mistakes seem like common knowledge, but they are also mistakes we all still make.

From not responding fast enough to having a messy office, these small issues are enough to drive you out of business.