Your best evidence may not be a fancy portfolio
For a skilled trades worker, good evidence explains the task and your contribution. Start with a short project log describing the task, your role, the equipment and the result. A hiring manager needs to know whether you merely observed a project, performed an assigned step, or were responsible for diagnosing and verifying the result. Those are three very different claims.
Build three small examples
Choose one straightforward task, one unexpected problem and one quality check. Examples might center on electrical rough-in versus live equipment service, shop-floor machining versus rotating-site maintenance, and construction installation versus recurring customer service. For each, write the situation, what you were authorized to do, which evidence you consulted, and how completion was confirmed. Remove names, serial numbers and sensitive photographs.
Translate shop language into hiring language
Do not make recruiters decode every abbreviation. Instead of saying “helped on jobs,” say whether your work involved construction sites with changing crews and schedules or service calls where the customer expects a clear diagnosis. Explain the tools, conditions and decisions that mattered. If you worked under a mentor, say so. Honest scope of responsibility is far more credible than inflated independence.
Use a skill gap as part of the story
A strong candidate can say, “I can do this under supervision, but I am still developing understanding how to turn a supervisor’s work order into a safe, checkable result.” That answer gives an employer a practical training plan. Pair your examples with a concrete next step toward taking ownership of estimates, coordination and quality without skipping verification. Do not list a certificate as a license if it is not one.
What to bring to an interview
Bring a one-page work summary, a list of equipment or environments you have actually encountered, and references who can speak to your conduct. If sharing images or documents, get permission first. The point is to make it easier for an employer to ask informed follow-up questions, not to overwhelm the interview with 40 photos.