I passed the exam on Shutter from the first attempt.
All I need was ten fine vector graphics that I have created myself. These were the images of cartoon people and some vector objects.

My first 10 works I submitted in the jpeg format.
Now I started to upload a vector format, ".EPS".
Although I don't use the extra effects, but sometimes I save the images in eps10. Often - in the eps8.

On Istockphoto you can find most of my illustrations in ".eps" format. There you can see my vector copies of my illustrations from the Shutterstock and more.