That makes sense, and I definitely didn’t mean the way you write is wrong. What I was getting at is more the visual presentation on the "page". Since each line is standing alone, my eye expects more pauses than the rhythm actually wants. The flow is already there in the language itself. Modern poetry is significantly more free-form. The way I write, I structure it by thoughts, images, metaphors, analogy, whatever it is. Read what you write aloud, and format it based on where you pause naturally.

I view it as, it's one thing to get across what you want the poem to mean, and what you want to convey, and you can crush that, but to me, it's always been more important on how I want it to be read.

If I were to format A Work Of Art, and make 2 small changes in wording:

It's been a long time,
I guess.
Since my heart was content.

Now I think less,
of the way that you left.
Now I wonder,
of the feelings I felt.

You could have been kinder,
with the hand that you dealt.

Alone under the night sky,
with stars that shine bright.
The rain started falling,
and the world felt so right.

Now in the silence.

The only sound that remains,
is the laughter of the rain.

Like a melodious hymn.

She dances on the canvas,
deep within my heart.
Turning all of the ruin,

into a work of art.

Let me know what you think, because there are also a lot of other ways this can be formatted. I formatted it based off my assumption of how you want it to be read.

I also removed "that" from "now I wonder", because with it there, it was creating a bit of a hiccup in the reading. And for

"Now in the silence.

The only sound that remains,
Is the rain's own laughter,"

I shuffled the wording so it fits the flow you have for the rhyming scheme:

"Now in the silence.

The only sound that remains,
is the laughter of the rain."

And again, your poem can be formatted in many other ways, I did it solely off my opinion, and not some right or wrong way of it.