I do not want to sound arrogant but I would have done nothing different, this is my third one I built and I got a reaver under my belt so I had alot of pratice.
First one I screwed up big time I actually ended up glueing it to my table cloth in the kitchen.
Biggest things to look out for that everyone messes up for on there first build.
TAKE YOUR TIME!!!!!
1: Build the feet in the postion you want and I would use blue tacky to make sure everything will look good.
2: Unless you really know what you are doing try to do no to amazing stance. If you build the whole thing put the pistions in and then find out the armour won't fit and everything is super glued..... ya head smashing is the least of your problems.
3: Paint everything separate if you glue the top on or the doors or armour painting it may actaully be impossible.
4: MOST IMPORTANT STEP: I never did it on any of mine and they are fine but I don't really ever move mine so they are ok but. IF YOU PLAN ON MOVING THEM PIN THERE JOINTS!!! Oh and buy really really strong magnets.
If you need any mroe advice give a holla