Darts

Anybody have a good simple reference for a beginner to learn how to make darts? I have made a vest that is too big in the bust area and I would like to try decreasing the bust area with a vertical or horizontal dart. Thanks!
P.S. I have never done short rows either.

I don’t really have any help for you personally, but on Knitting Daily in the not too distant past they had some stuff about bust darts. Maybe if you could find their site and look at things they offer you can find something of use. Or try doing a Google search with something like “knit bust darts”. Maybe someone else here knows how, so give a little time for someone to reply while you look around.