That's a keeper. Are those RD's or are they recorded live or what? They're perfect. You said you don't know much about production, but my ears disagree. This is very good.

Endings. Yeah, they can be...awkward. You have to find the right style and there are some ending options (2-bar, 4-bar) which I don't claim to completely understand. FJ gave me a good tip. Build an 8-bar song, for example, and audition styles until you find the one that works with your tune and has the proper ending.