I would be bold enough to say that most people who would receive that potholder wouldn't notice the quilting--they'd notice the fabric. If you didn't say how awful you thought the sewing was, they wouldn't even notice...honestly!
Not unless you give it to another quilter, of course.
Don't. Give it to someone who doesn't sew.
It's pretty anyway, and you will improve. I'm just a newbie, but I see my improvement already!