i think you should go to the little pnd at the beggining and check for a cannon?just try and good luck!

Yep. There's a cannon in the drain by the pond. I don't know how you get in, though.
What's up there can be reached by the cannon, I'm sure of it.

No i have all 150 stars and minigames too thats what my name is after the lvl mystery of the monkey cage. Once u get all the stars no more stars for u if u play the minigames alot that get boring