here is a post I did on a different site as to how I do my arrows. Hope this helps.
(its lengthy)
Step 1- Gather up the gear
I first take a ruler and mark a 10" line on a piece of paper. On most arrows of full length the crown dip is 10" long. I use 5.5" shield cut feathers, if you use blazer vanes or the likes you can cut the crown dip in size to be more proportionate to the shaft length and fletching. In my case I leave the shafts at full length because that is what my bow dictates.
I think when I have made arrows for compounds I have done a 6" crown dip for the blazer vane arrows. You could probably even cut that down to 4" if you wanted.
I use the blue sharpie to mark the shaft at 10"
I use the steel wool to rub the logo sticker off the carbon shafts. (apply a little goo gone or goof off to the steel wool and rub the logo of the shaft. It will come off, if you use shafts that have a finish on them like fake wood grain, camo, etc. This will also remove that. So if you can live with the decal being on the arrow skip this step.)
I use the masking tape to tape off the shaft at the 10" mark to prevent over spray while applying the crown dip.
Step 2- Tape off
Once you have the shaft marked to your desired length then you will want to mask off below the line so that you dont get over spray on the rest of the shaft. If you do it can be removed with the steel wool, but its best to not make a habit of it.
Step 3- Select a color
For this particular shaft it is a Beman ICS Bowhunter 400 shaft. It will fit my 55# set of limbs for my longbow so it will be yellow. The arrows that fit my 60# limbs are white. Thats how I personally tell the difference between the shafts when the decals are rubbed off. When applying the crown dip it is best to do it slow. You dont have to fully coat the crown dip on the first go around. Start the spray off the shaft and swing through the shaft in a horizontal manner while holding the shaft horizontal. Rotate and repeat. I can not emphasize enough that you do not want to lay it on thick. If you put it on thick the paint will run and you will get a wavy crown dip and that just looks like trash. Make sure that before you apply the second coat to the crown, that the first coat has completely dried. In the summer this will be fairly quick, in the winter it takes a while. I spray the shafts in the garage and let them set up to the tacky phase then bring them inside during the winter. In the summer I dont need to worry about it.
~alright thats about all I can do for now. I need to let the paint dry completely and order some feathers so that I can finish the shaft. Ill try to finish this up early next week or over the weekend.