First, I made some small changes to the drawing. I wanted to better repeat the design of the tapers coming off the letters below behind the pint glass. Once I was happy with the drawing, a wash of liquin and yellow ochre goes on.
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Then the burnt sienna underpainting. Even though this will be a largely blue painting, I still start with the burnt sienna to layer warmth into the painting. It also makes it easy to see guidelines as the layers of colors build.
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Here is the first layer of the blue/gray background.
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Next up will be the first layer of paint for the pint glass and blue in the lettering.