"Maybe I am wearing a skirt."
Translation:Misschien draag ik een rok.
In simple declarative sentences, the main verb is always the second element. The subject is either first or third:
subject verb other_phrases
phrase verb subject other_phrases
In questions, if there is a question word, the verb is second and the subject is third. If there is none, the verb is first and the subject is second.
question_word verb subject other_clauses
verb subject other_clauses
It gets more complicated with subordinate clauses and modal verbs, but that's the basics of it.