David arrived home and took a shower.

[alpacinou]

Is this correct and natural?

David arrived home and took a shower. He felt as though Jen's smell still lingered in his nose. The image of her figure was imprinted on his mind, constantly breaking into his thoughts.

 

[Tarheel]

It's natural enough.

I would delete "He felt as though" and say:

Jen's scent still lingered in his nose.

 

[tedmc]

How about:
The image of her figure was imprinted on his mind, constantly [STRIKE]breaking into[/STRIKE] appearing in his thoughts.

 

[Tarheel]

I might say:

He thought about her often.

 

[Charlie Bernstein]

Your "breaking into" is stronger than "appearing in."

 

[tedmc]

Your "breaking into" is stronger than "appearing in."

"Breaking into" implies something entering with force. Would that be natural when used with mental images?

 

[Charlie Bernstein]

"Breaking into" implies something entering with force.

That's right. That's why it's a stronger image.

Would that be natural when used with mental images?

It seems natural to me.

But what do I know? Not much!