Put
the tie around your neck so that end "A" (on your
left) is longer than end "B" (photo 1).
Cross
end "A" over the top of "B" (photo 2). 
Pull
end "A" up and behind end "B" (photo 3).
Create
a loop with end "B" (photo 4). This will be half
your bow. 
Next,
let end "A" hang in front of the loop you just
formed (photo 5). 
Hold
everything in place, pulling end "A" behind the tie
from below (photo 6), then folding it in half to
create the other side of the bow. Poke this loop
through the space behind loop "B."
Voila!
You've tied the tie (photo 7). If it looks funny or
bedraggled, adjust the tie by tugging at its ends
and straightening the center knot.
One last tip:
If you simply can't tie your tie, pray that someone
has a pre-tied bow tie, or go buy one yourself. Just
clasp it at the back of your neck and set off down
the aisle!
Don't you
love it....!!!