Artistic Anxiety

I love to help a friend out, but when they ask me to design, draw or paint something on the spot I get very nervous. Yesterday my boss asked if I wanted to go to a ceramic painting event, where the bowl I paint will be put into the kiln, then sold at a silent auction for a scholarship fund. I'm excited now, but when she first mentioned it I got worried immediately, I don't want to be the one who makes the ugly bowl that no one buys. If I painted something and knew it was only going to be me stuck with it that would be fine, but I'm supposed to be helping raise money. Thankfully my boss reassured me that lots of people plan ahead and even provided me with this year's theme. If it turns out well I will be sure to post an image.