My grandson has the first 'quilt' I made. It's really quite horrible, but he loves it. Why? Two reasons: 1) he watched me making it and 2) it feels cool on him when he gets into bed and he likes that. He sleeps in the top bunk, heat rises, so the initial coolness feels good.
He's happy, I'm happy. I told him that his quilt is the best one I will ever make because I learned so much making it.
Your grandson will love the quilt you made!