You really don’t need a tutorial for this one if you sew, so let’s assume you do and I won’t. I essentially took a drawing template of a ninja, cut out two sides out of soft fuzzy black material, zig-zag sewed a face on one of the sides with button eyes, pinned the faces together, sewed the perimeter with the sewing machine, turned him inside out, and stuffed him.
Isn’t he cute? The fuzzy material was obnoxious to work with so give yourself plenty of selvage. I also used an interface, i.e. recycled dryer sheets to help reinforce the edges as I sewed, as you can see in one of the images above. I actually used it around most of the perimeter even though I only show a picture of it along the two sides.
It gets smaller than your template – obviously, due to the stuffing. So if you want a big plushie, make a big template!