Tattoos would appear to be harmless if it is not something offensive,but we have to look at it according to God's point of view.
If we set the rules that would give us freedom,and spiritually help us,our rules would not be so strict,which the occult,nature worship,is what I am thinking of that believes in spiritual evolution.
The Bible says we do not own our self,for we are bought with a price,and are the temple of the Lord,and to not to defile the temple.
It would seem like,according to God,that however we are born,it should stay that way,and not be tampered with,for if God wanted us to have tattoos we would be born with them.
If we get tattoos are we saying that what God created is not good enough that we have to add to our body to enhance it's appearance.
God said women should adorn themselves,not with jewelry,or make up,or plaited hair,but with the inner man,which is in the sight of God of great price,so we know tattoos would be wrong.