I am not really a stanhopea fan but I saw the flowers during the weekend and I did not want to loose the opportunity to shoot and share a couple of pics. I forgot to mention its extraordinary fragance that is so strong that can be compare it to the strength of the Cycnoches clorochilon.
Try letting it grow bigger! I've noticed some Stans need to be huge before they are ready to bloom. Also, try cutting back on the water by a lot in winter.