Protruding eyes are normally large and round, and prominent. They may appear to bulge from the eye socket and may dominate your face.
Your aim will be to make the eye seem less prominent.
How to achieve it
In terms of curl, it would be best to have a ‘B’ or even a ‘J’ curl eyelash extension. You don’t want to open the eye any further, but rather to elongate it. So the cat eye shape would be a good option.