You have read job descriptions and can picture yourself in a different field. The next useful step may be a small piece of the work itself: something limited enough to finish and concrete enough to discuss.
A personal work sample serves two purposes. It gives you an experience of the task, and it gives other people something specific to respond to. It is not evidence that one afternoon replaces professional training or experience.
Choose one task, not an entire profession
Start with a recurring activity in the roles you are considering. A prospective communications worker might rewrite a fictional event notice for a defined audience. Someone exploring data work might clean a small public dataset and explain the checks performed.
Use invented, public or properly authorised material. Do not copy confidential information from your current employer or create a sample that implies you worked for a client who has never hired you.
Give the exercise a brief and a boundary
Write down the audience, objective, input material and what you will deliver. Set a manageable time limit. If the project grows, reduce the scope rather than spending weeks polishing something that no longer tests the original question.
For a fictional example: “Create a one-page visitor guide for a small community exhibition using the supplied opening hours and access details.” That is easier to assess than “Make something creative”.
Show the reasoning beside the result
Keep a short note explaining the choices, checks and limitations. What was difficult? What information was missing? What would need review by a more experienced person? An honest account of those points can be more revealing than a glossy final page.
CareerOneStop’s portfolio guidance describes ways to present evidence of skills and experience. Label a self-directed exercise clearly so it cannot be mistaken for commissioned work or an employer’s endorsement.
Ask for feedback you can use
Instead of asking “Is this good?”, ask whether the result meets the brief, what a beginner has overlooked and which part would need improvement in a real workplace. Respect the other person’s time and do not assume they owe you a detailed review.
Keep application exercises separate from speculative unpaid work for a business. Clarify scope and use when an employer requests a sample; you can often demonstrate ability without producing a complete commercial deliverable.
Review the experience as well as the output
Did you enjoy the underlying task, or mainly the idea of the job title? Which skills felt transferable, and which would require learning? Use the answers to choose the next experiment, conversation or course.
A useful work sample does not have to prove you are ready for everything. It should make your next career decision less abstract.