The floor is easier, yeah. But I wouldn't need to draw it at all - I've got it here.

[He holds out his left hand, palm up. The same array is tattooed on the palm of his hand because that's not weird or ridiculous at all!!]

The array has to be complete and usually I have a gauntlet so I don't need to draw it every time I want to use it, but I woke up here with this, so it'd be useful if my alchemy was working.

[Waking up with his array perfectly tattooed on his hand is Fine. This is absolutely fine.]