Here "mind" refers to deciding. To "make up your mind" is an idiom that means to firmly decide. Alternate translation: "Have you firmly decided" (See: [[rc://en/ta/man/jit/figs-metonymy]] and [[rc://en/ta/man/jit/figs-idiom]])
Nebuchadnezzar commanded his men to do this work, he did not do the work himself. Alternate translation: "the golden statue that my men have set up" (See: [[rc://en/ta/man/jit/figs-metonymy]])