I once made a post about how to best illustrate a martyr-saint. You can also read about my personal fave image of St. Pedro.
This is the image that was presented to Cardinal Vidal.
Now since today is the death anniversary of St. Pedro Calungsod, my namesake and patron, I present to you a new image I have found of St. Pedro. Note, it still doesn't look like what you see in religious store shelves today.
Glad to see the images of his martyrdom are seen in the image. :)