You won't always see changes in a step, but important things are going on. You want to avoid using move vertices if you can. Instead, the main things you'll be using are the two to the left of that, the increase/decrease mesh volume. Make sure you have the right clothing shape highlighted on the right as you do. And don't be afraid when with some sliders the changes needed look large.
that kind of makes sense, but i find that the increase/decrease mesh volume don't work for some things - for instance, underwear that fits well expect the small waist band has a huge gap on the side of the hips.
all I really need want to do is shrink it so it hits the body...the increase volume isn't quite right here, and moving vertices results in a jagged mess. not sure what the preferred method to fix this is?