=Just I heard your pulsebeat so I'm listening to it
(you* is pulsebeat in the sentence.)

-

That magnolia flower is depicting an ear.

The flower is very close to wrist.

Because that flower/ear is listening to pulsebeat.

I've got the idea of these painting and writing from my previous work "Too cold to think of you".

When I finished that work and was watching it then just I've got the idea.

On that position you can feel pulsebeat.

Those fluttering ribbon and petals are depicting my feeling is blooming also pulse is beating.