Thanks a lot John, but I already know how big my melon is. I meant how do I change it in Pep, firstly from the original size of the helmet, like what buttons do I press, and secondly, how do I change that from inches to millimetres. Oh, and also, I hope to god when you said "measure your head" you meant all the way around, from the front of the forehead, to the front of the forehead. Otherwise that helmet is going to be effing HUGE. But thanks a lot for that idea anyway.
EDIT: Also thank you to Gallard. Didn't realize that, I was trying to make my Grunty armour "life size." I hope I don't have to tell you that it didn't work. If I did that, one peice would be slightly bigger than an entire page. 0.0