Phal producing smaller flowers?

[applemabel]

Just a question: Why does it seem that some flowers on my Phal are smaller than the other flowers? Is it because the flowers bloom bigger at the beginning of the spike?

I've noticed the further away from the plant, the smaller the flowers are... and the closer to the plant, the bigger the flowers.

Is that about right? I hope so lol because I thought that maybe I wasn't keeping them as happy but what can I complain if I'm a first time owner and I have a total of 21 flowers in bloom from two Phals.

I have another in buds, another growing a spike, one working on a leaf, another maturing, and another just about to bloom (Paph.)