I think the basic premise is nice. However, it's too short in my opinion, and the ending is very abrupt. I think some background music could help, along with some varying vocal ranges. You look too serious! You want them to come because it'll be a fun adventure, right? Make it seem more that way, I think that'll really help sell your channel.
Don't take everything I say at full-value either. It's just my humble opinion. Good Start!