Be careful about capitalizing words in order to indicate their importance. Several problems attend rampant capitalization.
First, extraneous capitalization tries and fails to conceal a lack of intensity, style, substance, or all those qualities, in your prose.
Second, if you capitalize Many of the Nouns in your Sentences, your Prose your Wish a Story in German to write will read. (In German you capitalize all the nouns.)(And the verbs come last, but that’s a different Pitfall.)
Third, when you sell your novel, the cover blurb will contain every single word you’ve capitalized. Here is a possible result:
On the Plains of Mystery, Prince Greeb of the Empire of Thorns rides his WindHorse, Fred, to challenge the TrollBugs to a FireDuel!
You get my drift. It looks dumb. Don’t set yourself up for it.