texture and an alpha channel

there are two types of walls in my office:

1) glass-wall (translucent)

2) white wall (opaque)

for an alpha channel, i found an image that gave me an idea

-from Pamphlet Architecture

on the right, i found the pattern with ovals and curves quite interesting and decided to use it for my alpha channel.

this is the pattern that i made using photoshop

i gave some of my glass-walls textures