Could you check my writing, please?

I wrote it for a poem or song's lyrics.

Could you check it for grammar and vocabulary?

I put '/' when I don't know which expression they fit, so I would appreciate if you pick up appropriate one that you would say.

Thank you!

I put my hand on the window,

Think about today,

Remember/look back on/recall yesterday,

Imagine tomorrow,

She's standing out the window,

She's so strange,

Even flowers've bloomed against her,

Without any luggage,

She looks too tired,

To seem to wait for someone,

How long has she been waiting?/How long would she have been waiting?

A black cat with yellow eyes,

Just sitting and crying,

She out the window looks at me,

She's so strange,

Even clouds are drifting except above her,

Staring at me without looking at me,

Just right before the train departs,

A gentleman who is running over in his seat,

Talks to himself very quietly,

She was right there,

A week ago,

She is standing out the window,

She is so strange,

She is standing all by herself without her shadow,

Taking a breath without her breath,

The cat which was crying just all alone,

Had watched her,

What I've already realised is what I have to think about,

When the train leaves.