Don’t worry: you’re not the first one to have a really creative idea that’s mostly someone else’s idea with a few tweaks.
For an idea to be incredible, it doesn’t have to be entirely original — it just has to work really, really well. No one expects something from nothing. People just want results.
The iPhone X isn’t less valuable because it’s not the first iPhone. The Beatles’ remastered collection isn’t less valuable because it’s been retouched. And your idea — same principle.It isn’t less valuable just because it’s a better version of something that exists.
Innovation is making the best product possible. That’s all.