What we see may mean something. And, more importantly, how we see things may mean something.
Does more importantly seem grammatically proper? Or, do you use more important?
I may not get what, more importantly, and, or, importantly may modify, here. I think an adverb, and, or, adverbial phrase modifies a verb, so, it may modify see? Or, may you use more important, and, or, important, as an adjectival phrase, to modify a sentence that comes after it?