All sentences must be properly constructed. Finally, you are to use at least one simile/and or metaphor in each paragraph. This is what I have so far
In Brooklyn there was always something to do, there were so many exciting places to go. If you were bored on a lazy summer afternoon there was Coney Island. What kind of genius came up with the idea of putting an amusement park on the beach in the city? Who ever that was, I hope they got an award for it. You could take the subway to Coney Island, ride The Cyclone, walk down to Nathan's Famous for the hotdogs. Brooklyn was like the rainbow growing up. At the time Brooklyn was clean as a white sandy beach.
Run-on: "In Brooklyn there was always something to do, there were so many exciting places to go."
How will you fix this?
Unless this is autobiographical, you need to get the "you" and "I" words out of there. If it's autobiographical, you can keep the "I" words, but get rid of the "you" words.
You have problems with missing commas:
http://grammar.ccc.commnet.edu/grammar/commas.htm
Spelling -- at least one error.
I see two similes, no metaphors.
"Brooklyn was like the rainbow growing up."
There's a simile in here that is OK, but there's also a misplaced modifier. Was the rainbow growing up?
i am a rainbow.
In the vibrant neighborhoods of Brooklyn, opportunities for entertainment and exploration were abundant, capturing the essence of a never-ending adventure. The borough's rich tapestry of amusement and recreational spots provided solace for those seeking respite from a sluggish summer afternoon. Among these destinations, Coney Island stood out as a remarkable gem. The genius behind the notion of establishing an amusement park on the beach within the city limits was awe-inspiring. Whoever conceptualized this brilliant idea deserves accolades of the highest order. Venturing to Coney Island would involve a subway ride that whisked you away to a wonderland on the shores, where the famed roller coaster, The Cyclone, awaited its brave and thrill-seeking passengers. A stroll down to Nathan's Famous, a renowned establishment known for its mouthwatering hotdogs, would complete the experience in a perfectly appetizing manner. Brooklyn, in those days, resembled a radiant rainbow stretching across the sky, a symbol of endless possibilities and boundless joy. The cleanliness of the borough mirrored that of a pristine white sandy beach, emanating a sense of purity and tranquility that complemented the lively spirit of its inhabitants.
