Here is a full tutorial on growing Phiaus.
phaius tankerville, Nun's Orchid, Phiaus Dan Rosenberg, Phiaus Micro Burst
Note that they do better being cut down after the flowering.
I would be careful about heavy sun and prefer shade myself.
I need to add to the tutorial that you can propagate these plants by cutting the FLOWER STEM into sections around each node and placing the cuttings on a flat medium and keeping it moist. It only works about 10% of the time but it is fun to try and free.
You can try after the flowers have faded.