I think the melody depends on the meaning and title, or it could be something extremely dark and sounds super happy. Also, you may start when you feel comfortable to. Not the best advice, I suppose. (I'm listening to fnaf music rn 😁👍)
i really metal or just really energetic and aggressive songs like hyper pop or metal but also like calm slow songs like i like the 80s band the smiths my favourite song by them is "heaven knows im miserable now" they have other good songs aswell but thats my favourite