just one note ... DON'T fold the fur fabric to cut 2 at once, this will result in more cut fur hairs than necesary (and hence fur all over your apartment + added moop effect on playa)

take your pattern and draw it onto the back side of your fur with a sharpie (silver works great on dark fur) ... make sure to flip the pattern to do opposite sleeves ... and cut the pieces with an exacto or razor blade, cutting just through the backing, taking care not to cut through the long fur hairs.

i'd also suggest using a heavier thread to hand sew, like buttonhole thread, and knot ther seam often as you sew. this way, if the thread in your seam breaks while you are wearing the hoodie, you won't lose the whole seam, just the section between knots. good luck!