Hair Reveal XD!!!!! And Bro To Tell Something The Farm That U build Is Not a Creeper Farm That A Mobs/Exp Farm So Others Mob Spawn More And Creeper Spawn Less. U Need To Put Trapdoors on The Celling To Stop Others Mobs To Spawn! But Spider Can Still Spawn! Spider Can Only Spawn if The 3 By 3 Square Is Clear. So U Need To Put Carpet On 3 By 3 Square. But Don't Put Carpet On Every block It will Stop Everything From Spawning! Carpet Can Stop The Mobs Spawning! Put Glass Blocks For Better Experience Because Mobs Cannot see Through Glass Blocks Or Doors!!!XD!!!!!!