Yes, the star's signature can be signed on the grid paper. Signature is one of the personal characteristics of a star. They will sign autographs for fans or participants at fan meetings, concerts, events and other occasions. Signature can be done on various items, including paper, posters, photos, clothes, etc. If you want to get a star's autograph, you can prepare a piece of grid paper and ask the star for his autograph on appropriate occasions.