I'm picturing ...
I'm picturing your story..
&
I'm imagining your story.

What is the difference?

Question

I'm picturing ...
I'm picturing your story..
&
I'm imagining your story.

What is the difference?

Answer

The difference is the context.
Imagine- verb :: I can imagine my future.
Picture - noun :: This picture shows a beautiful landscape.

Answer

Those mean the same thing. 
To imagine something is to paint a mental picture. Imagining / Picturing = same thing.