“I get very uncomfortable when someone makes a design decision without customer contact.” – Dan Ritzenthaler
Make your customer part of your design process. Meet them, get requirements from them and involve them in your discussions, ideas and decisions.
This helps you to understand their needs, the way they work and even the way they think, and thus makes it easier for you to create a desirable product for them.
“You are not designing for yourself, but you are designing for someone else who has put his trust in you.”
Building good relationship with your customer is important as this is the only way to keep them loyal with you and your company.