I've made angry birds figures twice now, very fun to make! But I've made them pretty far in advance, at least a week before the actual cake was made. I think if stored correctly, in a cool, dry place, fondant and gumpaste flowers/figures will last a long, long time. I have 2 children, so I have to work on my cakes when they have gone to bed (so only like one or two angry birds a night!!). Hope this helps, and have fun!