I think it might look more stone-like if you rotated all the little marks at arbitrary angles. After all, it's extremely unlikely that the sculptor would chisel from exactly the same direction throughout.
A little constructive criticism; I think you may have overdone it on the marks on the statue (not entirely sure what to call them) There are so many of them that the statue looks a little cluttered. And I really don't think that they should ever overlap. I did a trace of the Celestia Statue from "A friend in deed" if you were interested in how this type of statue was done in the show.