I try to get my students to visualize train tracks for the proper set up. The outer rail being the target line with the club pointed to the target and the inner track the set up line. The set up line includes the feet, knees, hips shoulders and even your eyes. Those lines of alignment should all be parallel to the target line. This is a great visual for most golfers.
Many golfers try to align their feet to the target which is not a good set up for many reasons!