A good start, I like the soft edge camo and I think the machine gun turned out pretty good.
On future builds: Filling in gaps such as the one on the front of the tank, where the top and bottom hull meet will improve the quality of your builds, as well as removing excess plastic from flash or seam lines (example, that long line on the bottom of the barrel or on the end of the log).
Another suggestion I'd give you is to try some different methods out to give the model some "depth", I think the easiest way to do this would be a wash.
These are just some easy things to do that I think will improve the overall quality, I look forward to seeing some other models from you soon!