After all the pieces are cut, you can start whip-stitching the pieces together. I used a sewing machine with a fine needle and thread to stitch the entire shirt together before I began to hand stitch. The fine thread allows you to rip it apart to adjust and re "tack" pieces back together if need be, and the fine needle doesn't leave large holes behind. This way also enables you to test fit the shirt, and do any nips and tucks and trimming before you spend all the time it takes to hand whip-stitch the whole thing together. For instance, if you were to whip-stitch the shoulders together then tried it on, and there was a large pucker or lump along the shoulderline, you are kind of screwed, unless you took the entire stitch apart, made the adjustment, and started again....which would suck.
I am very fussy about how my hunting clothes fit, as I imagine a number of you are too. So, I really want to make sure I fit this garment properly, as I plan to hunt with it for many years.
Now, find yourself a nice sharp "glovers needle". This is a needle designed for leather. It is triagular and the edges are sharp, cutting as it passes through the leather. After working with needles and leather I realized how important a cut-on-impact broadhead is. It takes about three to four times the force to push a conical shaped needle through a hide, where as a chisel point slides right through.....compare that to broadhead penetration, and give me a WW-style head anyday.
Next, you need a thread, I wanted to find a very, very, strong thread. Alot of folks use artificial sinew, and the hard-core primatives use real sinew threads. I wanted something lifetime.....so I tried to find the strogest thread around, and realized I already had some....FastFlight! Perfect for stitching leather, and slightly waxed so it stays put in the needle. And I will never have to worry about seems failing because of the thread! This pic shows a little custom tailor stitching to pull the back in at the hips a bit for a more form-fitted shape.