Well telling her is actually quite easy.. Yes it is more easier said then done but with these simple tips your sure to catch a big one...
Step 1: Where your at with this girl/boy
If so its easy.. if they dont not so easy..
Now i know this instructable is about *how to tell a friend u like them* but the relationship and feeling must be strong in order for this to work
Body language: the main conversation tool is body language.. More of the conversation is through your body than your verbal communication... So be very conscious of the way each body position is posed.. Im not telling u to be worried about your body language because that looks funny :P
Ok so when your around this person you must use open and relaxed stances and expressions.
A nice calm face as the one shown below will prove to be worth while... Note the next few pictures
Palms slightly faceing outwards provide a more safer and open feeling then the crossed arms pictured afterwards.
Here are a few body language links
http://www.deltabravo.net/custody/body.php - table of some of the bod language signs
http://en.wikipedia.org/wiki/Body_language - explanation of body language