Rate my Cardfight Vanguard deck!

[CakeFace]

Hey guys, I was wondering how I could improve my megacolony deck and what cards I could use to improve it,

Grade 4s:
1x Evil Armor Mutant Deity, Goliath
1x Poison Spear Mutant Deity,Paraspear

Grade 3s
1xMachining Spark Hercules
1xLonghorn Hunter

Grade 2s
1xMachining Mantis
2xCharming Mutant, Sweet Cocktail
3xAbyss Diver
2xBuster Mantis

Grade 1s
1x Rebel Mutant, Starshield
1xElite Mutant, Tryghul
3xMegacolony Battler D
1x Machining Hornet
3x Machining Slater
1x Machining Yellowjacket
4xKarma Queen

Grade 0s
3x Young Executive, Crimebug
2x Machining Worker Ant
4x Madame Mirage
1x Machining Firefly
1x Shelter Beetle
2xMachining Scarab
2x Earth Dreamer
3xCocoon Healer

Thanks!