Always take pictures of your work before you give it away. I wish I had learned this one way earlier, but I never did until recently begin taking pictures, and even though I’ve asked for pictures from everyone I’ve given them to, I’ve only gotten one. So… always, always, always take pictures of your work, and then identify who it was given to, and for what occasion, and you might even keep a couple of swatches of the fabric just so you can see. I’ve heard of putting info, picture, and swatches into a page protector and then keeping a binder full of finished projects.
This tip submitted by @endlessprattle. Thanks!