Creating an Image

I am getting ready to rollout a number of pc's and I have never created an image before only loaded them.

It is mY understanding I have to run sysprep first and then the image for the licensing aspect of it all.

So I would like to know in what order I do this. I have downloaded sysprep and the instructions, setup an initial pc, and have my imaging software ready.

Do I run sysprep on that machine and then take that image? And then go to the next pc and run sysprep and then image the machine? Or vice versa?

I'm just not sure how this process works and want to make sure all my coa licensing is accurate.

Thanks in advance for your help.