"If you want to cook fusion food, you have to understand the component cuisines very well. You have to learn. Only after you have mastered the cuisines can you make them your own." Renown Chef - David Munoz.
With that said, fusion-ing cuisines shouldn't be about throwing ingredients together but more so about understanding the role each ingredient plays on the general scope of the dish. The idea is to enhance and compliment each cuisine while combining them, without losing the essence of each one.