
Western smiley are often read from left to right and are seen as faces on their side. In many cases the nose can be omitted such as :) or with the nose :-) or with a rounded nose :o). The eyes are normally a colon :

but can be a semi colon ;) to indicate winking or an equals sign to indicate surprise =).

Different characters can be used to display other parts of the face depending on which emotion it is showing as you will see in the examples below.
| :) or :-) or :o) or :-] or :] or =) |
smile. |
| X-P or X-p |
knocked out or dead |
| :-( or :-< or :-[ or :[ |
sad smiley face, frown. |
| :/ or :-\ or :\ or :-/ |
skepticism, annoyance, uneasiness, or a slight frown. |
| :-| or :| |
indecision, deadpan, a lack of response, or indifference. |
| ;-) or ;) or !-) or ;-p |
wink smiley. |
| :-D or :D or =D |
laughing emoticon. |
| :-P or :-p or :-þ |
tongue sticking out: used to convey a joke, light-hearted sarcasm or a light hearted groan. |
| B-) or 8-) |
wearing (sun)glasses. |
| :-o or :-O |
surprise. |
| :-s or :-S |
confusion. |
| :-B |
buck teeth. |
| :-x |
"shouldn't have said that" or I have no response to that. |
| >:o |
angry and yelling. |
| >:( |
angry and sad. |
| :'( or :`( or :*( |
crying. |
| >:-) |
devilish behaviour. |
| o:) |
angel or innocent. |
| XD |
dies laughing. |
| :-> |
grin. |
| :*) |
blush. |
| :-* |
kiss. |
| :-& |
tongue tied. |
| <3 |
I love you / that. |

Of course, there are exceptions to the left right smileys, these smileys are read right side up, as you would normally look at a face.
| ^_^ |
another :). |
| T_T |
crying. |
(_l_) or (_x_) or (_o_) or ( Y ) |
a bum. |