You must design a sign in somthing like photoshop. if you can not get acsess to that tell me how big you want it and the animals name and the design you want and i will mske it for you. Just leave a comment with the info
now print it of paper and paste on card board and cut out or print out on photo paper and u will not need to past on cardboard.
Find somthing like a popsicle stick and cut one third or have off.
Tape this to the back of the sign then tape or stick onto the cage:) I hope u love it!