Yeah, I do need a collar, and since my armor is made using your templates, I need it from you so that it matches up.
My proportions seem to be similar to yours, because your armor cutouts, unmodified, fit me well. I did actually cut quite a bit off the bottom of the stomach armor however. I thought it made it look a little better, personally. But I really do like the templates, they've been very useful and I have no complaints whatsoever. Good job..