Nr 2 crashed

I'm really proud to show you today my newest Concept Art picture.
The Idea was a NASA mech on a environment far away the earth. The second mech was crashed and the other members of the team are on the position to help. It's my first complex work but I think it works. There are some mistakes that I will do not on my next work but this is ok. I'm a beginner. What do you think?