One of the students proved to be a good artist and had some experience in drawing tribals and calligraphy. He volunteered to add hand drawn calligraphy to some of the wall pieces, using a white paint marker. The pictures will show you the result.
Note: Doing calligraphy with a paint marker might not be the "correct" way to do it, we had to improvise to make it happen. Calligraphy lessons are being developed right now :-)