I hired an artist for an oil painting. The artist drew 10 pencil sketches and said "hmm I think this one works the best" and finished the painting based on it.

I hired an artist for an oil painting. The artist drew 10 pencil sketches and said "hmm I think this one works the best" and finished the painting based on it. I said he didn't one shot it and therefore he has no ability to paint, and refused to pay him.