It was important that I picked an image that suited my vision. After some consideration, I chose a stock image. Then, I mocked up a fake print advertisement for french fries. It wanted it to be innocuous-looking.

 

Technically, the billboard was a painting itself, so I maintained the impression of brick beneath the print advertisement.

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Then, I overlayed the Heinz ketchup bottle. I played with perspectives and blend modes to create a stencil-like look. For the sake of authenticity, I hand-painted some splatters. Like most graffiti artists, Banksy uses stencils. But, with every piece, he employs a messy quality that makes the design look quite rushed.

 

My favourite part was painting the spray - that was the cherry on top. I imagined squeezing my own bottle of Heinz ketchup. The ketchup always comes out so strong, like the "jet" setting on a garden hose. I thought about the distinct sound it makes. At the end of the spray, I added a red blob of ketchup that balances out the image.