Starting at the top, and under a slightly menacing, but still beautiful moon, I'd do a slate, or slate-look roof (moss, notwithstanding.)
Then I'd go crazy with siding and trim. I'd do the narrowest lap siding available, with bands of vertical panel trim to break it up. On gables, I'd do even more vertical trim over panel siding, behind a gable bracket.
The interesting thing to me about this exterior is how well it balances linear shapes and forms, with the more fanciful detailing. It's so well done.
Wherever possible, Victorian style corbels, repeated over and over, would give depth and add the layers of detail you see in the original. Same for spandrels over the porch, too. And all coated in a soft white-but-not-too-white color.
Then, to honor the original design experience, I'd layer in reclaimed, salvaged, or just newly-made vintage styles for doors, windows, lighting and hardware.
To finish it all off, an easy-to-care-for picket fence, a warm natural flagstone walkway, window boxes for an herb garden, and as many climbing roses as a yard would hold.
And to make that inspiration real, here's those (real-life, ready to use) sources:
