here's an update... I did the shirt with all vertical lines, which is how I lay the pencil down on Fisher 400, because of its weird tug it does on the pencils. I usually just keep adding layers vertically and then when I have enough pencil down, I blend them unless the layers did a good job of blending themselves. I don't know if I should blend or add layers to the shirt - I feel like it shouldn't be too hard-edged or maybe not as finished looking as the rest... I'll also let it sit to find tweaks here and there before I call it finished.
Of course my five year would say it is finished. She always does as soon as there is some pencil all over the paper.