Nice effort Richard 
There’s many technical issues but some interesting areas. The left side is interesting with the vehicle and the … actually, wait! …HAHA!!! i’ve just noticed where the reference came from for the building, i recognise those pillars
ok 
Anyway, the sign to the left is really out of perspective …
Yeh agreed with the general comments above, you really need to pull back a little and tackle something less complex. You also need to plan your approach a little more … it just seems like you have a sudden brain wave then you suddenly try to do it all in one shot with no planning, concepts, tests etc…
Honestly what i would suggest is this; start a new piece above in a new thread, and literally let us see your progress every step so we can see your thinking process and help direct you. Begin with an idea, no concepts or anything, then with that idea do research, for example if you were doing a WW2 night scene set in … france, literally spend a day hunting down reference pics of similar scenes; everything from historical photos to paintings. This way you have a strong base work from, with a good understanding of what kind of lighting works, and all the little details that you might not otherwise think of.
The work you do before hand, all the planning is the foundation of the final painting, and the painting wont stand up if it aint got no foundation
… yeh, even for me that was cheesy lol
So yeh, please do that, be really interested in helping you step by step, but we need to do it from the beginning 
Best,
Dave.