How to create a portfolio with little content?

[cr3ativelight]

Hello, I’m pretty new to Fiverr.
I’ve been here for about a month, and started getting my first few orders.

I mainly do translation and copywriting.
One potential buyer contacted me asking for a portfolio, but I have two problems:

1. The work I’ve done on Fiverr is way too little to create a portfolio
2. The job I do outside Fiverr (I’m actually a copywriter and digital marketer full time) doesn’t have the permission from the clients I work with to be used in a portfolio

Even though I could ask my first buyer permission to use a sample, what if I don’t get it?

So I want to be able to showcase my abilities, but I don’t know how.

Any tips?

Thank you!