The star occurs when a stick gaps away from another. It is a sign that a stock is about to go up or down by a very substantial amount.
When a star appears to go down after the value moves up, there is a good chance the stock will move down. It could also be a false signal and the stock will continue to go up in value. The best strategy for a star position is to wait to see what happens after a star appears. You can wait for one or two more candlesticks to appear after the star to decide if the stock is ready to move in a certain direction. The singular star could go in either direction, but one thing is for certain - the value is going to change by quite a bit when it appears.