You need to break it into paragraphs. One long wall of text is hard on the eyes. Many of my Fanfics deal with what we have not seen in the universe. Themes with original ideas make great story's. Its a good start just readers do not want bleed while trying to read that with out a pause. Use the edit option a great deal i do and turns a story from a good read to a Fantastic one. Also never be afraid of change. Go back as many times as needed.