Trying to recreate my childhood

I’ve tried a million and one perfume and found that none quite really captured nostalgia for me. That is until I realized that so much goes into a perfume that capturing a specific scent requires a lot going into it. For me that scent has been sunscreen, rotting roses, and caprisuns. I’ve started recreating it with beach scents, roasaries, and fragrances with fruity undertones. Is there any hyper-specific scent you would want to recreate? How would you go about doing it?