-Since the syrup helps keep it moist, you can make this cake ahead of time. One or two days covered on the counter should be fine, any longer and I would refrigerate it.
-For a more vibrant flavor, try to use fresh-squeezed orange, mandarin, or tangerine juice rather than bottled.
-For an interesting and nuttier flavor modification, you could lightly toast the almond meal before incorporating into the batter.