For a first caricature ever, this is pretty darn good! As long as you’re learning it’s absolutely a success. I won’t critique it super hard since you are in the midst of learning a ton. The one thing I’ll say is that I would have emphasized the slender nature of his face. It looks to me like you went more round which is the opposite of Turturro’s face imo. But still the nose and teeth are pretty recognizable.
The move brush (grab brush in blender) is one of those obvious brushes but super powerful. One of my professors in college exercised his sculpting skills by using only the move/grab brush.
