Iīm sorry that I canīt give you advise about this kind of mechs, but it looks nice for one of your 1st ones. In a way I have to agree with Phong that B.-mechs are your real talent, but with a bit more training you could get much better in this theme. However nice work.
May I suggest you something: An Armored Core needs to have a Core (Either OB, EO or Stnd), legs (Heavy, Med or light)/Hover/Tank, Scanner, head, etc. If you're trying to make an armored Core, I suggest you not to make it big, as it may fall apart by the weight. Even thought, you can practice and try new techniques and styles (check mines too if you need some basic tips), as it sometimes you see something complicated, but it's just something easy. So then there's one last thing to add: WHO THE H___ DO YOU THINK I AM?!