How do you invoice clients with varied projects?

Hi all, I’ve been developing my relationship with a new-ish client that hired me initially for blogging, and have also been helping out with marketing strategy & other things, too. We’re planning to work together on various other writing projects going forward, in addition to regular blog posts. I suggested to them that we establish on a monthly basis exactly what work I’ll accomplish the

Your response when asked for a free sample?

We’ve all been there… applying to a job or speaking to a prospective client, and they ask for a free sample to evaluate your work. What’s your standard response to this request? How exactly do you word it, if you want to start a working relationship with this person? I recently applied to a gig where an email was blasted to all applicants asking us to