Print at 100% / "Actual size" — not "Fit to page", on A3 landscape. Verify with the 100 mm scale bar before trusting any measurement: if it doesn't measure 100 mm, the crest sizes are wrong and every pose will be scaled with them. Stand an 85 mm diameter × 160 mm tall cylinder on the dashed circle (a drink can is ~66 mm, so use a tube, tin or printed post). "Load this layout" replaces the live scene and playlist — save your current layout first if you want it back.