Understand the decision scope
Solution architecture often focuses on a specific solution and its constraints. Enterprise architecture examines capabilities, systems, and change across a broader organization. The boundary varies with team structure.
Connect technology to business choices
Practice describing the business need, alternatives, trade-offs, and consequences of a decision. A diagram becomes useful when the reader can see what choice it supports.
Build a small architecture portfolio
Create a capability map, a current-state view, a target-state proposal, and a sequenced roadmap for a case study. Keep assumptions visible and explain why the sequence is realistic.