Controlling brush alignment relative to a path

So, now that we've talked about how to add start and end tiles to our brushes, I…want to talk to you about brush alignment.…By default, when you draw a path, and apply a brush to it, Illustrator centers…that brush along the path.…So, for instance, the double needle top stitch we did is centered over the path.…That bias trim brush we did; also centered.…Now, most of the time that's okay, but there are many occasions when you're…drawing flats when it's not useful to have the brush aligned to the center, or…the path aligned to the center of the brush;…we really want to change the alignment.…

Here's a perfect example.…If I grab my path here around the neckline, and try to add this brush to it, it's…centered, and it sticks out, and it doesn't keep the integrity of the flat that I…just finished drawing,…so it's really not the best way to go.…I want to adjust the brush, so that when I apply it to a path, I can control…where it sits along the path.…So, instead of having it centered, what I really want to happen is have it…