Okay, I'll take the challenge. The pattern is nice but the paint job seems incomplete to me, if a little rough. Maybe your paint is too thick. It needs an ink wash to bring out the shadows. And items that would not normally be painted camouflage need to be painted in as such ( the barrel end, vision scopes, sensors). Maybe weather the bottom.
Finish this and resubmit for comments...it's hard to tell how a paint job will turn out until it is complete. Photos from a bit further back and in focus would help also.
Hope this is taken the right way.
Cheers
Braz