re: dumb question about stacking a tiered cake.

Well i have done that before but i fixed that. But idk.. they just looks kinda sloppy… not tall flat and crisp like some other cakes. This is a cake i workes on with some 4-H kiddos so excuse some of the decorations… they where not my doing and im not quite sure what they are. Aspen tree maybe? Idk… anyways… the tiers kinds show what I mean. They just arw not megga crisp… the cakes just seem to blob and wave. Maybe i am using to much frosting? Maybe not enough? Maybe my cake is not dense enough? ..