So after many weeks of work, here is my first lego mecha.
If you look at the WIP photo [link] you can see I've changed a fair amount. I managed to find more black and white pieces and replace a lot of the grey.
There have been a lot of changes and tweaks, like the guns beside the head and a few changes to the head. I also managed to find the pieces to alter the front of the legs and add the jets on the back.
Overall, I think it's come out better than I thought it would when I first started out, although I definitely don't want to make one of this size for a while (this one is 33cm tall) I'm going to keep try out a few smaller designs first.