This is a part of a music, and the correct is not "na morando" but "namorando". There is no sense in portuguese say "na morando". You can "morar" (= live) but you can never put the preposition "na" before this verb. Another point: The music say: quando Deus "TE" desenhou and not "se" desenhou. If you want to say, quando Deus se desenhou, is the same that say: when God drew himself.