Whoa brilliant observations on the style being that of Konami's metal gear.
Technically I should try and make them slightly more original than this metal gear rip off style.
As for the shading that is something I will try and experiment with before I make any updates.
I'll let you know when I bump into anything I am unsure of, btw thanks guys its great to have help.
This is my first time spriting a cityscape, here above is where im at so far.
If anything im doing at this stage is off let me know thanks.
and finally
I am going to restart these images as I feel I am not getting the results I like at all.
As of now im going to take your suggestions on board and experiment with techniques to improve the sprites.