What I need to improve in this image?

I'm certainly not a food photographer, but I have made some very quick alterations ...

Symmetric images are often Boring Images taken directly from above are flat. The image have no clear focus. The colors are simply horrible. The red napkin steals the color from the soup. The spoon is ugly. The background is dull And don’t add value to the motif. There should be some kind of parsley - something nice green stuff on the soup.

Search ‘soup’ at Adobe Stock and see what you are up against ...

First, think the colors are all wrong...I would have gone with a white, pale blue, even black if you swap out for a silver spoon.   The soup looks bland...add something to the center...perhaps a small dollop of sour cream, teaspoon of caviar, and a sprig of parsley to make it appealing and pop on the page.  What really bothers me...THE NAPKIN...it should have been A) ironed B) Folded so all four corners are perfectly matched up, then C) Ironed a final time once folded so you have good sharp crisp edges.  The napkin is not properly set...IE, if it is 2 inches from the top edge on the left side of the napkin, should be 2 inches from the top at the right side of the image.

Just my opinion, but you did ask.

With the napkin we can see that your image has a parallax problem, it's a trapeze. In real life, do you really see a NAPKIN under a plate ? That's weird. The sppon is rendered too dark, cutlery is bright. And there is that dark zone on the right of the photo. And I don't like the  color of the background.

at least clean the spoon

A simple question you can ask yourself is what you want people to take from this image - what do you want people to feel and think when viewing this image? What purpose would someone have for this image?

On a purely personal note I find the image to be lacking punch, it seems somewhat flat. The framing is odd and I don't find my eye drawn to anything in particular.

The colours clash. Red and orange! They are not complimentary. The overall colours clash with each other. You have to think about the colour composition. It is just as important as the composition itself!

I don't particularly care for the colors. The soup in the bowl against the napkin are great. The countertop, on the other hand is rather off-putting in contrast with them.