It is 3 and 1/2 inches square as I used 12 x 12 paer to make it.
I used wool in all the tags and pulled the edges.
There are 6 slots in the top and one in the side. So I put two months in each slot and a plain card in the side one.
I just takes one piece of 12 x 12 paper and I made a cardboard cover for mine and covered it with material cut off when I shorted my curtains here in my craft room and decorated it with a tiny tag and some flowers. Ribbon to fasten it with.