Looks neat especially with those layout...

The chibi actor sprites kind of clash with the enemy sprite.

The character sprites are chibi, (small with big heads) and the enemy sprite is normal sized. They don't look particularly well together.

That's not the point. It looks bad. The actors have the anatomy of a bobble head, which is fine on it's own, the enemy sprite has normal human anatomy, which is also fine on it's own, but when you mix the two together in the same game, it doesn't make any sense.

Yeah, that's not the point. It simply doesn't look good.

As a beginner, one of the most valuable skills you can have is knowing how to take constructive criticism. I'd advise you learn that skill.