Can you just explain glyph of warding because it’s description. Is always having to be left to interpretation. And as someone who has been on both sides. Both by “kaboom books” and “Tenser’s Transformation Tattoos.” As caster and DM.
Please explain your mess!! Need a more specific question.

Though I CAN tell you that glyph of warding can't be a tattoo.

"You inscribe it either on a surface (such as a table, or a section of floor, or wall) or within an object that can be closed (such as a book, a scroll, or a treasure chest)…"

— Dan Dillon 👥 (@Dan_Dillon_1) January 20, 2020

Some quesitons I’ve seen arise are whether surfaces can be movable since objects can’t (like the floor of a vehicle like a wagon or a ship), and if the face of a shield would count as a surface or an object. Shield no, vehicle yes.

"Is it basically a floor or wall?

— Dan Dillon 👥 (@Dan_Dillon_1) January 23, 2020