Sure, put me down. I would vote, but I find it hard to choose an expression. Vincent had very expressive eyes and eyebrows, so a strictly neutral expression may be a bit of a waste. At least get some of those forehead wrinkles in there and an arched eyebrow, both of which work for serious or smirking expressions.
I think Vincent in his late 40s or early 50s is the best timeframe to capture (late 1950s and early-to-mid 1960s). Using his appearance in House on Haunted Hill as a reference works for me.