Way to many "height" to be honest.
Looks like all the things are pasted together.
I think you should make a connection on WHY all those armored plates are there.
It looks random in my eyes.
Now about HOW you made it, it seems you know how to make depth, and that looks good.
But I think the gradients you put over almost every part (Yes I watched your tutorial, good work on that ;))
are a tad to much.
Overall I think its worth a 7.0
would someone mind telling me what a WIP is? sounds like im a newbie, and i am at least in art