Agile design is infused into all stages of software product development, and developers participate in strategic and tangible design throughout the project.
Research your users so you understand what they want and how they feel. Then develop scenarios to describe the real life situations they're in.
By understanding the context, motivations, and desires of the person using the product, I can better determine how to design the details.
You can build a UX display board inexpensively with foam core boards and stands to keep UX design artifacts visible and help guide the team.