!!! 
Thank guys for your help. I was going to say yes but when the woman told me that she already ordered one but it wasn't exactly what she was looking for that told me either she had alot of money or was very fussy. I don't want that for my first wedding cake. I wouldn't have any nerves left and have to use the profits for hair dye.
Hey, at least she hasn't mailed you 27 times (I kid you not!) over a birthday cake for a 4 year old!
I say next wedding cake you are offered, do it! You have the talent, so do as Debi said, break it down to 3 smaller cakes, and hopefully it'll seem less daunting! Good luck!
I say do it too! You're cakes look great! I just did my first paid wedding cake (Hydrangeas) in my pictues. I was soooo nervous and so I brought a friend (cake decorater too) so that help me calm my nerves a bit. It was a fondant stacked cake. I brought them in pieces and assembled there to give myself piece of mind for the transporting part. I had to drive about 20 miles. It turned out fine and I was so glad to have my friend with me!
Jacqui
Looking at your work, I think that you are more than able to tackle a wedding cake. You do have the skills and because a wedding is such a big event for someone we become intimidated by the thought of being apart of something that is so special for someone. We need to begin to take on those projects just as we would a small birthday cake because what we have is passion for this and it doesn't matter whether it is small or big because we put forth our best in every cake that we do. We have the drive and desire for this. So put forth that drive and effort toward that wedding cake just as you've done to all of your other cakes and I gaurantee that it would be a success.
Don't let fear cripple you.
Go for it!
Cynita
just my luck though the people would want the fountain and staircase too. (you know the works!)
You know what's involved in a fountain? You assemble the fountain stand and sit the cake on top of it. Takes about 7 seconds. Big whoop. No big deal.
Dont' make it harder than it is. One step at a time .... it's (as we say in the trade) "a piece of cake!" 
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