All of the works below were done without the use of artificial intelligence. Academic work.
Below is a logo created with multiple borders, a shadow effect, and a gradient on the letters. It was done in both Photoshop and GIMP.

We also did inpaint, which means removing elements from the image without cutting out the background. This background was a bit tricky to inpaint; some tools made it distorted.

This Cristiano Ronaldo comic strip was vectorized (meaning each line and shape was manually drawn using graphic software).

Slides were created about information security. These logos are all vectorized. An interesting effect in this example, in addition to the creation and editing of custom icons, is the effect of them stepping outside the circle.

This table also features shadow effects, circular shapes, and mirroring on the headphones.

In my opinion, the slide below has a somewhat outdated design, but it serves as an example of an image made with various circular effects that can be used in many adaptations and complete business layout projects.