It is very, very cute! I salute your creativity and craftiness!
A word of caution though: our precious yorkies are targets of theft. Here in TX I know of several cases where thieves have broken into a home and stolen YTs. Most famous, Baxter and Cooper out of San Antonio
Welcome to Find Baxter and Cooper . I know there have been several threads here at Yorkie Talk about how people are cautious about advertising that there are Yorkies in the home. People from my YT meetup have removed signs and cutesy thing from the outside of their homes like stickers and "guard yorkie on duty" placards.
We live is a sometimes scary world, and I believe in safety first. That's just my two cents.