Nox wrote: If i put level modulation or level up will it help?
Well the problem with level modulation is it gives your opponent a card advantage. This would be bad, also you have a dragon deck and can do the same thing with Darkness-Metal Dragon anyways. Just get Darkness-Metal Dragon out special summon Horus Lvl6 and then destroy a monster with Horus Lvl6. Then you will have Horus Lvl8.
As far as Level up is concerned yes it would be a much better card then level modulation. However you would need to have the right conditions to use it, which I suppose wouldn't be too hard. Try it out see how often it works out for you or just becomes a dead card.
When making a deck I like to think about what the odds are % wise a card will end up of no use to me if I draw it. Generally I like to use only cards that most always have a use no matter what situation.