how do i make a c.v with no work experience?

Make a portfolio of what you are good at.

For bonus points, make a blog/website that teaches others how to do it.

Then you have the makings of a C.V.

But making a portfolio isn't something you can do overnight. Hopefully you already have a sizable amount of work you can show and maybe you can just package it into something presentable.

I get *all* my contract and "permanent" work positions based in large part on my portfolio. When I'm not working I'm always doing personal projects that can be made public and thus go into a CV.

It sounds like you already know that a CV is not a resume. A CV is a history of things you have done. It requires no real work experience, just useful achievements that show you can accomplish good goals.

Good luck.