Made it! Just not on the actual day...
I drafted the spoon bonnet pattern myself, an earlier version seen here. The skirt is simply 4 plus metres of panels that have been box-pleated at the front and sides, and cartridge pleated at the back. It's worn over my cage crinoline petticoat hybrid. The jacket is based on the Spring Paletot pattern a free pattern available through resources provided by The Ladies Treasury
Now what to do with my 1863 outfit? As luck would have it, Otago Boys High School are also celebrating their 150th this year. I wonder if they'll have a fete open to the public? If not, maybe I'll go pose outside the gate. It's all about the photo-op after all. ;p
Happy costuming everyone, and Happy 150th Dunedin Botanical Gardens! My, you are old!