here are some key points for armor a few things to keep in mind, is assimetrical armor, is a good sign of a sturdy design, no matter how much of it doesnt make sense
1] i usually start with the shoulders, seeing as how they are the trickiest thing to master.
2] try to avoid making the chest piece into one solid piece covering everything from the neck to the groin, not only does it usually end up looking lame, but its pretty hard to be flexable in
3] elbows can be tricky, and it isnt really a big hazard zone, so dont feel crappy if you cant draw elbow pads
4] the knee is actually 3 seperate pieces, which brings me to another point, dont be afraid to break one piece of armor into several layers, it ensures flexability
5] feet should really only be armored on the toes, the heels, and the soles.

ok, here are some basic armor designs, note that you dont have to deck out the kiwy in every part of armor, but as a referance, i did all the crucial spots on here.
one thing when making a big suit of armor, is keep a theme in mind, dont give him a simple chest piece, and arm guards with plain shoulder guards, and really fancy and obnoxiously shiny greaves (shin armor)
1] smooth armor edges that are directed inwards, you dont need your kiwy stabbing himself with his armor
2] make sure it's well balanced, dont give him gigantimus shoulder pads and tiny other stuff
3] dont over complicate the armor designs, it can be way more work then you bargain for
4] gravity exists, make sure that any loose armor looks loose and draped
5] the tip of the nose goes on the corner of that old block we stuck on his face earlier :D

fixed a few things i missed, uhh. i get to go home in 2 weeks