It is nearly impossible to improve a design without feedback from others, whether customers or other sources of knowledge. Feedback from experienced designers will give you strong perspective and feedback, especially around UX and usability patterns. In Software Engineering: A Practitioner’s Approach, author Robert Pressman shows for every dollar spent to resolve a problem during product design, $10 would be spent on the same problem during development, and multiply to $100 or more if the problem had to be solved after the product’s release. The key lesson is clear: It is far less expensive to prevent a problem from occurring in the first place than to fix it later.