[1] Take your LJ username and replace each letter with the corresponding number (A=1, B=2, etc) :
5 18 9 3 1 15 9 26 26 1 3
[2] Add all of the numbers together to create a kind of super number : 143
[3] Add the digits of the number together: 8
[4] Find the post of this number in your LJ. If you don't have that many posts, add the digits together again.
[5] Take the digit you noted in step 3 [or 4 if you added the digits together again], and count that many words into the post :
[6] Use the resulting word in a google image search, and select a picture from the first page and post the results: her