Forum:How to improve this deck?

I have two structure decks, Warriors' Strike and Rise of the Dragon Lords and few more cards. I know that random decks are not good, but I cannot make a theme yet. So, how to improve my current deck?

This is my deck.

Total: 48

Monster cards:

Kaiser Sea Horse x2 Ninja Grandmaster Sasuke Masked Dragon Tyrant Dragon Swift Gaia the Fierce Knight Majestic Mech - Goryu Darkblaze Dragon Morphing Jar Decoy Dragon Spear Cretin The Creator Horus the Black Flame Dragon LV6 Herald of Creation Exiled Force Felgrand Dragon D.D. Warrior Lady Snipe Hunter Gilford the Lightning Guardian Angel Joan Gearfried the Iron Knight Mataza the Zapper Goblin Attack Force

Spell cards:

Snatch Steal Heavy Storm Premature Burial Giant Trunade Change of Heart Reload x2 Foolish Burial Soul Exchange Mausoleum of the Emperor x2 Mystical Space Typhoon Fissure The Shallow Grave Terraforming Swords of Concealing Light Lightning Vortex x2 Brain Control

Trap cards:

Royal Decree Malevolent Catastrophe Call of the Haunted x2 Magic Jammer x2 Sakuretsu Armor Dust Tornado Draining Shield

Should I throw out cards from my Deck to have about 40 cards? If yes, what cards? Or should I remove cards from my Deck in order to put one of these:

Masked Dragon (another one) Mystic Swordsman LV2 The Creator Incarnate Twin-Headed Behemoth Flame Ruler Trade-In Big Bang Shot Mystik Wok A Wingbeat of a Giant Dragon Double Summon Wicked-Breaking Flamberge - Baou Blast With Chain 178.223.230.212 (talk) 08:19, June 2, 2012 (UTC)