What you need:
5. Pom pom / button / felt stickers / ribbon
Step by step:
Paint the door tag red at the bottom and black at the top.
Once the red and black paint dry, paint a layer of varnish for glossy effect.
Stick white pom pom to Minnie door tag and yellow felt sticker to Mickey door tag. You may also use button or any other suitable materials instead.
Add a ribbon to Minnie door tag.
For more personalised door tag, stick your name with wooden alphabets.