This has probably been asked on here before but here it is again......When you stack your tiers how do you keep from messing them up. I have not stacked a fondant cake only butter cream and have a mess on my hands once I get the tier in place. I have either messed the one below but most of the time I have messed up the tier I am stacking. I temd to mess up the icing when I pick it up. How do you avoid that?