I am good at making stuff and my other co-founder is good at design & research.
We have a couple of clients right now that are helping us pay our bills and take care of a couple of employees (excluding us).
Obviously, for increasing the revenues we should focus on increasing the sales and marketing. Right now I am not sure should I focus on just catering our existing clients(which is a risk) or should I spend time on some other activity too?
PS: We provide Web design and development services to our clients.