I agree with Cathy that the rhymes in the second quatrain are uncomfortably close in sound to one another and "shoving sideshow" is a tongue-twister. I have never read
Peter Pan, but have seen some statues of the character in which he seems to be playing a musical instrument, such as in this famous statue in Kensington Gardens:
https://en.wikipedia.org/wiki/Peter_...%2812% 29.JPG
The British slang may stump some American readers, but I think it works as local color.
Susan