Onur Cobanli explains:
As a designer, you do not necessary need to sell your designs yourself; it is a waste of your talent as a designer, instead you can do one of the following two things: 1. You can focus on doing better work and let your good work sell for you, 2. You can get an agent who would sell your work and get a commission. In both ways, you will have more time to focus on designing, less time to deal with searching for clients.