Sorry for my bad english.

So, I made an e-commerce site for a company once. It's actually just a WordPress site with that WooCommerce plugin.

After that, my dad was "advertising me (suggesting me?)" to one of his friend that I can make a website.

Then his friend called me and I asked what to do. In short, she has an online marketplace website where the users can be either a seller or a buyer (just an ordinary e-bay like site). Her site is built with PHP (codeigniter 2).

I can't make custom site that's why I'm using WordPress for my client, I'm still learning PHP right now. How do I tell my dad to not "overestimate" my ability to make sites. I already told my dad about my abilities and I'm still learning, but he keep saying that I should accept it because it will give you experiences.