A good technical illustrator needs to be well-versed in many different types of drawing depending on the particular industry they in. If you choose to be a freelancer, you might have to use multiple techniques all in one day. https://www.fieldengineer.com/....skills/technical-ill

What is Technical Illustrator, Job Description and Responsibilities?
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What is Technical Illustrator, Job Description and Responsibilities?

Let’s learn more about what a technical illustrator does and what types of illustrations they create, as well as the job outlook for this particular industry.