Don't worry if you find one with broken glass or that seems beyond repair, they all have potential!
Spray paint the frame!
Spray painting tips: Shake well and frequently, be patient--light coats work best, do multiple coats, seal.
Add ribbon to the back and secure with a staple gun.
Break a piece of chalk to the width you’d like your stripes and using the side of the chalk make a buffalo check pattern. The crossing squares are darker in this pattern. You can use your finger to smooth out the chalk and create a smooth finish
Get creative! Hang a wreath over it like I did, hang a sign, insert a family photo!