I did the same - I had a quick look through your site - very nice, you certainly seem to be a fairly skilled photographer from those images, anyway.
I would +1 the above advice. There are plenty of places to research (one of the good ones for wedding shooters is David Ziser's blog at DigitalProTallk.blogspot.com - plenty of images, and his "Analysis of a Wedding Shoot" blog series is great, as are his wedding training videos on KelbyTraining.com.
But research is research, and though it helps get prepared, actually doing it on the day (especially when you are new to the whole wedding thing) is I'm sure a *world* of difference.
Absolutely try and assist someone - for free if necessary, and get a few shoots under your belt until you are confident in what's required of you.
And good luck! Shooting weddings as a primary (or only) shooter is a weighty responsibility!
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