Thanks Korash!

... I was leaning toward the northern end as well


I'm... probably doing something wrong, but every time I set a layer to "overlay" (I'm using gimp) when I merge it, later, it doesn't look the same.. it looks like it would if I had it set to normal?

I'm too lazy to figure out why, so I've just been avoiding it

But I'm reading the tutorial (and a few others that caught my eye again) right now!