#1
I was in the middle of writing a song and this riff popped in my head

B- 12 12 12 12 12 12 12 12 12 15 15 15 15 14 14 14 14 10 10 10 10 10 10 10 10 15 15 15 15 14 14 14 14

After playing it for a bit it reminds me of a riff from another song

Could you verify this because I might use it for my song if it is original
#2
What are you trying to do? Tap? Alternate pick? Etc?

It makes a big difference HOW you play it.

This is coming from a guy who didn't real half of metal was tapping when he first started.