I don't know if it is the light or the BnW or if this lettuce is really wilted and dead. Either way, Weston had a way of using light to make the subject come alive and look incredibly lustrous, and, for me, you did not do that here.
This is good. Weston's cabbage shot was all about the form and the texture. Here, you got the form well but with a different perspective. Lettuce has a different texture which is shown nicely here being smooth and veiny with a sheen. One thing that sticks out is with the background being soooo deep black, the subject looks very two-dimensional. You got the light draping on the subject fairly well!