It looks like you had fun and is a fun watch for sure. I'll give you some production pointers. All of these came from my years working in radio and tv and anyone else who has the experience would say the same thing.
Mic. Your voice doesn't match the level of the opening music, which was great. Keep the mic at chest level as much as you can which will let you speak at a regular voice.
Camera. It's called the "3 button shot" meaning, if you are wearing a dress shirt the top of your hair touches the top of frame and the 3rd button touches the bottom. Watch any news anchor and once you see it you can't unsee it. It keeps a tight perfect frame everytime.
Pictures. It's up to you but the rule we always used was cut in and fade out. This way it pops in catching attention and then when the viewers eyes drift off it disappears softly and they don't really notice it or get distracted by it.
Dead air. Some of the pauses are 2-3 seconds long and while once you get going it's engaging enough to go to the end at the beginning its not tight enough and may turn people off and they never get to the fun stuff. So I'd say no silence or black over 1/2 second of it can be avoided.
Hope it helps!