It is nice to have you giving some art lessons :)

Let's get into it...

We can have some negative space by including a shape which fills some white space.

As you can see on this example the most vibrant shape on the canvas is the fuccia dot in the middle surrounded by a frame which creates stress due to the negative space.

On this example we have the fuccia dot in the middle without the black frame, immediately you feel relaxed because there is no close distances on the canvas. The negative space has been released :)

Have a good night, keep it up buddy!