Now it's time to change

Once upon a time,
I've read in a line,
That I'll be fine,
If I don't do a crime.
 
Seriously, I try.
It's like an empty cry,
But I can't deny,
So, I know, it's time!
 
I don't want to hide,
Now I'll go to wild,
Just like a spoiled child-
Better hold me tight!
 
Come with me at night,
I'll show you what is a fight,
I know, that I'm right-
This an amazing flight!
 
Don't be scared in the dark,
I'll give you the mark.
My teeth like a shark,
That would be a lark!
 
Want you be the best one -
You must always run
Like a jump you've done
That's would a great fun!