This is about lighting, different kinds, lighting levels and decoration!

Lighting Levels:

Torch lights up to 14 BLOCKS in any direction
Glowstone lights up to 15 BLOCKS
Jack-O-Lantern lights up to 15 BLOCKS in any direction
Lava lights up to 15 BLOCKS in any direction
Redstone Torch lights up to 7 BLOCKS in any direction
Fire lights up to 15 BLOCKS in any direction
Natural Light lights up to 15 BLOCKS in any direction
Moonlight lights up to 4 BLOCKS in any direction

I will put no sound video when it's finished uploading to youtube.