Lockdown/Dragon beatdown

Winning 75% on DN with this deck, but always looking for advice on how to improve it.

Deck: 40

Monsters: 23

Red-Eyes Darkness Metal Dragon X3
Red-Eyes Wyvern X3
Delta Flyer X3
Masked Dragon X3
Horus The Black Flame Dragon LV6 X3
Horus The Black Flame Dragon LV8
Totem Dragon X2
Exploder Dragon X2
Koa'ki Meiru Drago
Vice Dragon
Prime Material Dragon

Magic: 14

My Body As A Shield X2
Mystical Space Typhoon X2
Upstart Goblin X2
Smashing Ground
Book Of Moon
Gold Sarcophagus
Future Fusion
Dark Hole
Monster Reborn
Giant Trunade
Creature Swap

Traps: 3

Royal Decree X3


Side Deck: 5

Five-Headed Dragon
Trishula, Dragon Of The Ice Barrier
Black Rose Dragon
Ally Of Justice Catastor
Stardust Dragon

-2 upstart, +2 Mirage Dragon. He helps with lockdown and he can be normaled and upstart helps the opp.