It can't hurt to try. Those are the simpler kinds of wards. I've made larger ones for the temple, to reinforce Dresden-san and Helio-san's work. They aren't something I could show you in an afternoon though. But another time perhaps. The working there is significantly more complex.

[Rei brushes a stray bit of hair behind her ear. Honestly she hadn't really known what to expect from Haruhi, but with this little thing she felt like she could at least think of the other girl with a bit more kindness. She wasn't the sort to open up easily, but there was enough common interest in magic and disliking Tokyo stereotypes that she was willing to try.]