So I looked at it more closely and it doesn't look as good as I thought it did. Probably because I was just relieved I finished it (
did it all in a sitting 
).
Yeah I agree the perspective is quite messed up. It was originally meant to be top down. The missile pod is mounted 45 degrees, but the rest is really not clear. Palette definitely needs some tweaking and I probably dithered more than I have every done in any single pixelart scrap... not sure why it happened, it just did.
The one thing that's always been conflicting me is that it seems the norm for "good" pixelart is to be
high contrast and fairly bright and shiny with lots of colors. But I want to make a piece realistic, so to say. And real metal is hardly ever immaculately perfect and shiny like a watchface. (I realize your reference photo is an extreme to point out light sources, Terley.) That's what's been frustrating me. And I'm not sure how to improve at this point.
Just take my other C+C thread in this forum, I've gradually improved upon the tanks and artilleries, but they don't seem realistic...
There's one game that does this really well with low res graphics and that's C&C1. Even though the vehicles are 3d prerenders with pixel touchup, it's very convincing and doesn't have that cartoony feel that's prevalent to most other games that make use of pixel art.
I want to be able to achieve that level of believability with my art.
Can anyone give this noob some advice on how to do that?