Key changes. Groove. Inversions. Even though the song has such a smooth path, playing this tune was very complex. On my right hand, I blend a lot in between the use of a pick moving into finger-style & vice-versa. I’ll have a full lesson about this “technique” only soon! Make sure to add those chromatic passes during the pre chorus + chorus. 
Take a breath, relax, laid back those notes… speak to us!