Separately trained gardener was given a stream of supportive messages after drawing a complicated wall painting on the Day of Remembrance in the clay on the back of his van.
Shaun Harvey, 34, spent an hour and a half using his finger and brush to make a picture at the request of his six-year-old son Zake.
"My guy wanted me to draw Lancaster on the back of my car on a poppy day (as he says)," said Harvey Press Association.
A bit can see the Lancaster Bomber flying over the soldier's scene next to the grave with the words "Lest We Forget".
Harvey of New York, Lincolnshire, said he "loved art at school," but he has not done much since then.
Pictures of his delivery were shared on Facebook a thousand times, and some users even offered him money.
One user wrote: "You have a huge talent friend, and if you ever wanted to give me one, I'd like to pay for it."
After being successful in social media, Shaun was invited to the Lincolnshire Aviation Heritage Center to get a shot of his real-life Lancaster Bomber.
"I am really very grateful for all the love the picture has," Shaun said. "I'll draw on the van again, but I do not think he'll have a lot of answers."