Cut side and top panels four days in advance. Use 20 in. fondant roller with orange guide rings to roll out gum paste 1/8 in. thick (reroll gum paste as needed for cutting panels). Use fondant trimmer and small side panel pattern to cut two complete panels for small cake (reverse one for opposite side). Repeat to cut two complete panels each for medium and large cakes, using medium pattern for medium cake and large pattern for large cake (reverse one for opposite side).
For dimension on each panel, cut bottom sections marked A-B-C on pattern as one piece. Cut a second A-B-C section. Cut two reverse A-B-C sections for opposite side. Also, cut two separate C sections (reverse one for opposite side). Use damp brush to attach A-B-C sections, then C sections, to panels.
For top panel, use fondant trimmer and top panel pattern to cut one complete panel. For dimension, cut a second complete panel, then trim off A and B sections marked on pattern. Also, cut a separate C section. Use damp brush to attach dimensional sections to panel. Let all pieces dry 24 hours on cornstarch-dusted boards.