I have NEVER used columns before...and I'm somewhat nervous. I'm making a Sweet 16 cake and the birthday girl designed tha cake herself...she wants clear columns between the cakes. It will be 3 tiers. I bought the Wilton fillable columns, and separator plates, but am nervous about the assemly...any advice? Are they easy to attach to the plates? Thanks in advance

http://www.wilton.com/cakes/tiered-cakes/separator-plate-cake-construction.cfm

Thank you!