MATERIALS
・Cello tapes
・Oil-based markers (Blue and Purple)

STEPS
1. Apply one layer of cello tape on the flashlight of your mobile phone
2. Paint blue on the light with the marker
3. Repeat step 1 and 2
4. Apply one more layer of cello tape, then paint purple on entire light with the marker.

※ TO HAVE THE BACK LIGHT EFFECT, LUMINOUS PENS MUST BE USED IN THE TRICK