Nobody can answer this since your deck list is not given on your profile or in the comments.
That being said, the best constructive criticism you could receive would probably come from sites specifically tailored to the Yu-Gi-Oh! TCG and has forums that let you post your deck; just go into Goggle and try searching for one. You can also try looking at "Blackwing" decks that professionals have used; again, use Google to find what you need.
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you can only get 5 blackwing cards from crimson crisis. if you already have them beat lutz , kid in city when you walk in 5 times, and then it unlocks sirocco the dawn in world championshp. duel him to check out his blackwing deck and try to use his deck
It is the Deck pack called Return to Chaos unlocked after defeating story mode and talking to Crow on the upper side of the B.A.D. area then challenege both dark mists which includes all dark signers, defeat them and the deck will be unlocked and the rest of the blackwings will be there
no, but there is a yugo ap for the i phone where YOU make your own deck, or you can go to the deck doctor and you give him your deck and he will fix it up for you, or if you have a friend that is an absolute pro like me :), you can ask of him to help you with your deck.
get the card called joke of doom the trade it with jhon the he will give you a crystal beast deck
the dragunity deck is a structure deck