8x10 Oil on Board
I almost always do a thumbnail sketch in pencil to make sure my composition and values are interesting enough to do a painting. I also find that value studies in oil give me a lot of information which I can apply to a larger version of the same subject. I am still reading Richard Schmid's book "Alla Prima". He discusses the monochrome block in, and in some cases carried it a few steps further to a finished painting.
This scene is from Hunter Street in Hamilton, looking toward the TH&B Railway Station in the background.