Automatic Resizing your Stop Loss and Take Profit Level with Harmonic Pattern Plus (Harmonic Pattern Scenario Planner) Having understood all the concept behind the Pattern Completion Interval, you might observe that sometime price can react outside the pattern completion interval. Sure, there is nothing perfect in the world. As long as you understand the pros and cons of using large stop loss size, it is still fine to control your own stop loss size. However, we still prefer to express stop loss size in terms of pattern completion interval range for convenience. For example, if the original stop loss size was equal to 1 x pattern completion interval,  you can certainly use 1.5 x pattern completion interval or 2 x pattern completion interval. Another consideration before you are using pattern completion interval, if you can enter the market at the competitive price, then you can feel less guilty when you increase your stop loss size