A Baked celebration cake will certainly give your special occasion a centrepiece to remember.
How much notice is needed? It just depends what might already be in the diary, so never assume it's too late (and it's certainly never too early to pencil in a date, either!)
Below is a selection of some of my favourite projects to give you an idea of some of the styles that are possible. But don't forget that yours will be designed exactly the way you'd like it.