I'd go for the bottom left one... I like the moon and the interesting sky... Also, the lighting makes everything else in the scene observable, whereas in the other 2 pictures most things get lost in the shuffle... For instance in the top picture and the bottom right one, you lose the tree in the back, whereas you can clearly see it in the bottom left one.. Anyway, that's my pick for clarity's sake.. Also, as an additional FYI, make the smoke over the fire a little more transparent... Less defined edges... As for the light coming from the fire, give it an orange/yellow filter, since right now it's too white... But yeah, in the end I think you're going to come out with a great scene here...