I just found a nice indicator called Scalper Point. This indicator plots most recent support and resistant using points. As a scalper, we can use this indicator as a warning sign of new wave. When scalper points shown on the top, it means that new resistant has been made and the price will move down. And when it shown on the bottom, the price will move up. But, I suggest to add another confirmation before opening position. Do not rely on this indicator only. I add my favorite MACD Histogram to confirm this signal.