the scene is not bad but the shadow of the people is not coming from the sun, it is too right-oriented. Try to align the secon light you inseted with the sun, and try to add 2 lights with yellow or rose colours, one on the left of he POV facing right and one on the right facing left, this will add a bit of ambience but leaving the sunset effect you want(I hope). Hope it is clear. My 2 cents. cheers vasq