I didn't make the right flavor cake (the mom likes lemon, the coworker doesn't. Too bad - guest of honor rules).
The frosting got a little soft and started sagging halfway through lunch. (not my choice to put it in front of a west facing window in July!)
The mobile wasn't the right scale to the baby (it's art - nothing is ever perfect, and i wasn't putting a huge baby on top of a cake).
I wasn't using the right knife to cut the cake (um, what's a cake server for then???)
I wasn't cutting the cake right (I use indydebi's method, and it worked)
The filling shouldn't have been pink, since no one knows if its a boy or a girl (what other color should raspberry filling be?)
The only "disaster" was that I used a meringue buttercream, and towards the end of lunch, one side of the cake fell off - there was a thin layer of fondant decorations, and they just got too heavy. Especially since the cake was infront of a window. I apologized to the mom, who just laughed it off, which is totally how she is. No problem at all.
I mean, this girl totally thought that I was incompetent. Anyone else have someone like this before?