I love tattoing and I am a devotee of lord krishna. I think whether tattoing god's name on body is a sin as I am a girl? Does hinduism allow tattoing? Is there any notes about tattoing in puranas?
Puranas do not speak about tattoos.
Tattoing of God's name on body should not be done. In vaishnava Brahmin tradition we have to emboss the shanku and chakra on the shoulders after upanayanam, not God's name. It has to be given due respect.
The human body will be buried or lit into flames after the atma separates from it. If you tattoo God's name this will also go into the mud or consigned to flames which is not acceptable. Lord Krishna the sarveswaran should not be treated like this. He is the preserver and he is Omni-present. Hope this clarifies.