If these arrows are to be used for hunting a matt finish is recommended so that they will not reflect at all. Fletching is up to the individual. I am currently using turkey feathers to fletch with, after spending half a day on a commercial turkey farm plucking wing feathers as the birds went into the slaughter house. And I've now got a sack of feathers in the garage which should last me several years. Although some of them need to be dyed to cover up the bloodstains.
Arrowheads are up to the individual.
Although I have handmade the shafts, I have fitted modern target points over the tips and glued these in place. This is not authentic as far as traditional styles of arrows goes, but target shooting with authentic hunting broadheads or bodkin points will rapidly destroy your targets and annoy everyone else who wants to use the targets. If fitting 'traditional' arrowheads, either steel, flint, obsidian, etc, saw a slot in the head of the shaft, again sawing at right angles to the growth rings so that the stresses are spread across them all, rather than concentrated on a single ring. Then fill the slot with glue and slide the shaft of the arrowhead down the slot, binding it tightly into position and onto the main shaft with thread or sinew, well glued into place, and wipe off the excess glue.