when is a trend you friend. it is important to draw your trend line correctly. a trend can make your trade strong or may be.
the correct way to draw a trend line is in the direction of the trend. the line should touch at least 3 points of the trend to make it strong. the more points it touch the better. that is now in a straight line. if it only touch two points, then the share could be a may be.
to confirm the buy or sell you can use an MACD or Stochastic or other strategies