A customer reaches checkout and cannot tell when the order will arrive. The team could make the date larger, move it higher or add an explanation. Before choosing, it needs to know whether the problem is visibility, meaning or missing information.
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Following that problem is a better way to discuss UX skills than listing tools and deliverables. Each skill should contribute something distinct to the decision.
Research: identify the uncertainty
Watch how people interpret the existing delivery message. Ask what they expect it to mean before explaining it. Analytics might show where people leave, while a session can expose a misunderstanding about dispatch and arrival. Neither source, alone, establishes every cause of abandonment.
Information architecture: choose where the answer belongs
Delivery information may affect product selection before checkout begins. If customers need it to choose between items, improving only the final step leaves the earlier decision unsupported. Map when the question arises and whether the information should travel with the item, the shipping method or the whole order.
Prototyping: make a consequential change testable
A prototype should include a changed address or an unavailable delivery option. Otherwise, it may show that people can read an estimate while avoiding the moment when their expectation changes. Choose enough fidelity to test that uncertainty; a fully styled account section adds little to this particular question.
Interaction design: handle the transition
When a new address changes the available methods, what happens to the previous selection? Can the customer see why the estimate changed? If an update fails, can they recover without re-entering everything? These are behavioral decisions that a finished-looking default screen can conceal.
Visual design: make comparison possible
Align the method name, cost and arrival information so customers can compare the same attributes across options. Strengthen the information needed for the choice. Do not give every detail equal emphasis simply because each is accurate.
The designer then has to explain how these decisions fit together. That communication helps the team distinguish an established observation from a proposed fix and a result still to be measured. A portfolio that shows those connections demonstrates more than five separate artifacts labeled with five skills.