Please do some practice before you go out hunting. They are everywhere on all pairs and tfs and if you miss one, the next won't wait long time. See the next example from the January in 2016.

 
This is SHS with one head and two shoulders. The neckline touches all valleys between shoulders and head. Unless it is the case, be careful, it isn't a SHS or non-barking hound. The next pic shows the same pair and time window, but a wrong pattern.

 
When you missed the SHS pattern, there was another smaller SHS and a hound following. See where at the second shoulder of the hound (green) the three hammer candles hammering out the bottom. The three hammers at the same spot and an old sup/res are a very strong sign that the market don't want to go down and instead the market will go up the next time. What follows is an impulse up.

 

Putting it together we have a pack of SHS and hounds (green and red pattern) and this corrections formed the second half of EW3 and the down move after dark blue SHS as EW4. What we also see is that it can quickly get messy on the chart. An advanced or naked trader just draws a colored neckline or some other short sign to keep the chart clean for more PA analysis.


Have fun.