Ah, I understand what you meant now. Without judging the artistic merit of these pieces, I submitted the OP only because the idea and process of "painting" on

Ah, I understand what you meant now. Without judging the artistic merit of these pieces, I submitted the OP only because the idea and process of "painting" on glass with a hammer struck me as cool and interesting (pun intended). In any case, artistic merit is always in the eye of the beholder.