First of all Dave, you are no Virgin at scrolling! Even though you have only been scrolling fot about seven months, you have accomplished more than most have in two or three years!
That is a wonderfully done plaque. If I was selling it I would have a price of $45 on it.
You have to try and look at a piece objectively, and ask your self, What would I pay for it? That's how I started with prices. If it doesn't sell, adjust the price for next time. If it does sell, you might think about raising the price next time.