Some of nice hanger exist :))
1. Cover wood with gel medium.
2. Place paper picture side-down.
3. Firmly smooth out all bubbles.
4. Let dry overnight.
5. Wet surface with wet napkins or wet hand towel.
6. Gently rub wetted paper off.
7. Clean all paper residue off.
8. Cover with mod podge.
9. Let dry.
10. Done :))