How to build a portfolio when you do not have clients?

Hi guys,

My name is Alexander and I am from Russia!

I am a WordPress developer and a novice entrepreneur. I want to start a WordPress website agency for small and medium businesses.

BUT … first of all, I need to create a portfolio and practice in real cases. It will be impossible to find clients without this step.

Therefore, I am ready to make 7 to 10 websites from scratch, even for free (or a cup of coffee), but I can not find clients anyway.

Any advice?