put strees on the key point
Mainly packaging, books, posters, corporate image, graduation design and other finished products, with a small amount of basic course assignments.
Commercial design
You'd better fill in the contents close to commercial design, such as DM sheets of real estate and cars, pages of fashion magazines, packaging of daily necessities, company LOGO, corporate brochure, recipes, etc. And let others see where your level is as much as possible.
Design
After the content is done, it is the design portfolio, which is also the embodiment of your ability. Try to do well.
Ask for help
You can ask an experienced designer to do it for you, because your own works are likely to have technical bottlenecks and cannot be bound. Or discuss with the teacher while doing it, so as not to reinvent the wheel.