Flows before pixels
Most usability problems are structural: too many steps, decisions in the wrong order, a key action hidden in a menu. Visual polish cannot fix those. So we start with the journeys that matter most, such as signing up, completing the core task or upgrading, and map each one step by step before designing any screen.
Wireframes then settle what is on each screen and how it behaves. Because they are deliberately plain, feedback stays on the structure rather than on colours.