Don’t let the jargon trip you up. Submit two things: the cover letter (called a “query letter”) and your manuscript. That’s all.
Seriously. That’s ALL. Don’t include anything gimmicky. An author once sent me a vial of homemade perfume that tied into her story’s theme. Only, I didn’t know the vial was in the submission envelope when I shoved it into my bag to read at home—along with several full novel manuscripts. The vial was crushed in my car. The scent? Let’s just say the manuscript was about a horse and leave it at that.