I am planning on stacking a 9 inch and 6 inch cake. It will be iced with buttercream and will be airbrushed to give it a shimmery look. The question I have is, would it be better to stack them and then airbrush or should I airbrush them separately and then stack? Thanks!
I would stack then airbrush. That way if there are any"dings" to the BC during stacking you don't have to try and fix and re-spray.