Here is the condition that makes the patterns so much more reliable - it is none other than the Bolinger bands.
By having your pattern on the BB you are working with an extreme price range. At this point the price action will most likely walk the band, ie if you have, for example, price action crossing the upper band, then it will most likely continue to walk the band.
The band itself will widen rapidly and the price action will go up with it. At some point the price rises will reach exhaustion and the bands will begin to close again.
The exhaustion point is clearly shown by the evening star pattern. At this point the extreme price action has become extreme plus. Both the BB and the evening star combine to give very high prediction that the price action will go back to the centre.
This is very clearly shown in the chart below. The first evening star is on the middle BB and still could go anywhere (and does). Trading this one will result in a loss.
The 2nd one is on the BB - and look at the profit !!

By
tymen1 at 2008-02-21