For those who have never made a "modern" wooden arrow like the ones above, the feathers are set at a very slight angle, just 3 degrees or so from memory, to induce a spin in flight. The points and nocks are made with a taper socket and each end of the arrow is sharpened with a specialist "pencil sharpener" to match. The fletchings and other parts are glued on with a fast setting glue similar to balsa cement.
The best shafts are made from cedar, and Port Orford is famed for growing tall trees with close, straight grain.
The arrows have to be made to length to suit the archer. We all have a natural "draw length" - the distance from whatever point on the face we pull back end of the arrow back to, to the pile or point. This wants to be a little beyond the front of the bow so you never overdraw the bow and get the point stuck in the back of the bow. Cue the risk of an explosion of splinters that could impale your hand, arm, face or eye :-(
Lastly, the flex of the arrow needs to be matched to the power of the bow, allowing it to bend around the bow as it accelerates and then flex back and forth, settling down in flight. A higher poundage bow needs stiffer arrows or they may flex enough to break. The flex is different depending on the orientation of the grain so the grain has to be kept in the correct orientation when you measure and batch your shafts into matched sets and when you assemble the arrows (they are always used the same way, with one feather different from the other two to orient you).