Please help i'm beginner, day to night conversion with firepit effect


Hi, i finish editing a short movie, i want to make day to night conversion or at least sunset conversion on some shots with characters and firepite effects on their face . My first question is, is this possible ? and how do you think i can do this, clean and realistic I saw some tuts on internet and none of them seems to be very pretty and realistic,like just grade all frame, maybe you have better solution with good roto, face tracking or 3D projection. .I’m working on media composer, i have nuke and maya, i’m beginner on compositing and i ready to learn hard stuff to progress .

There is a exemple of one of this shot !

Thanks for your attention .