How to Add a Portfolio on Upwork: Steps, File Limits, and What to Show
To add a portfolio on Upwork, open your profile, click the (+) button in the Portfolio section, fill in the title, role, description and up to five skill tags, add your images, video, files or links, preview it, then click Publish. Here are the exact steps, the field and file limits from Upwork's help center, why an item sometimes will not publish, and how I would choose what goes in it.
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David Iya