Learn how to choose supplies (needle, thread, hoop) here. Fortunately all this stuff is really cheap. Also pick up a fabric marker to use for drawing your stem and leaf shapes on your napkin. Choose a "disappearing" marker that fades away later.
Use this stem stitch to make stems. It turns out it's the backstitch flipped over. I'm so pleased to find I accidentally used a real, bona fide stitch! (For the most part.) I divided the embroidery floss to use 3 strands.
Use this satin stitch to make leaves.
You have read this article tutorials with the title How to's: embroidery stitches. You can bookmark this page URL http://jenkrebs.blogspot.com/2007/03/how-to-embroidery-stitches.html. Thanks!