Cost Down isn't really needed in a Blue-Eyes deck, and you have three BEUD on your deck, but only one Dragon's Mirror, which bans your Blue-Eyes, so you're ok with one BEUD, If you have Royal Decree, you can't activate other traps, Lord of D. is easily beaten, giving you no time to bust out Flute of Summoning Dragon, which only summons from your hand, Kaibaman is kind of a waste, and you need more draw engine, just in case you have no cards you can bust a play with, Wingbeat of Giant Dragon kind of affects you, if you have a bunch of good traps out. This deck needs a lot of work.